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Title: Biology Solved MCQs
Description: Biology Solved MCQs for 1st Year Medical Science Students Short MCQ`s Note: This is a Very Good Book Which Will Increase Your Knowledge a lot after reading it.
Description: Biology Solved MCQs for 1st Year Medical Science Students Short MCQ`s Note: This is a Very Good Book Which Will Increase Your Knowledge a lot after reading it.
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1
1st Year Biology Solved MCQs (All Punjab Boards)
Chapter 01
Choose the most appropriate answer
...
They are the remains or impressions of living organisms preserved in rocks:
Tissues
Fossils
Calcium
Statutes
Correct Ans
...
It is the study of fossils and their relationship to the evolution of life on earth:
embryology
taxonomy
physiology
None of these
Correct Ans
...
Man has been able to produce food in greater quantities due to advancement in:
Mathematics
Space science
Physics
Biology
Correct Ans
...
Taxonomy is the study of:
Functions of different parts of organisms
Naming and classification of organisms
Hereditary characters
Structure and functions of cells
Correct Ans
...
Anatomy deals with the study of:
Relationship between organisms and their environment
Development of an organism from a fertilized egg or zygote
Structure and function of molecular components of the cell
Internal organs of organisms
Correct Ans
...
Pollution of our surroundings in the recent past has resulted because of:
Biological Research
Rapid industrialization
Information Technology
Forestation
Correct Ans
...
The statement made by a scientist, which may be the possible answer to the problem
...
Sc
...
A
...
Ed
...
c
8
...
d
9
...
c
10
...
F
...
King
Laveran
Ronald Ross
Grassi
Correct Ans
...
In case of typical attack, malarial patient feels:
Very cold and chilly
Very Warm
Sleepy
Normal
Correct Ans
...
Sexual reproduction of the malaria parasite occurs in :
Man
Mosquito
Red blood cells
Both a and b
Correct Ans
...
Inside human body Plasmodium attacks:
Nerve cells
Red blood cells
White blood cells
Kidney cells
Correct Ans
...
In the life cycle of Plasmodium fusion of gametes and formation of gametes and formation of zygote
take place in:
Body of Man
Body of Mosquito
Air
Regards: SYED ATEEB (M
...
M
...
B
...
0301-4870705)
3
1st Year Biology Solved MCQs (All Punjab Boards)
Water
Correct Ans
...
The part of Cinchona plant found suitable for the treatment of Malaria was:
Seeds
Fruits
Leaves
Bark
Correct Ans
...
When sporozoites of Plasmodium pass from the blood to liver cells, they multiply for:
8 days
10 days
12 days
14 days
Correct Ans
...
Man can now be saved from fatal diseases by using:
Vaccine
Bacteria
Antibiotics
Plasmodium
Correct Ans
...
The word malaria has been derived from the combination of two words which are:
Latin
Italian
Greek
Arabic
Correct Ans
...
Which one of the following best describes the scientific method?
Doing experiments in laboratories
Collecting all known facts on a subject
Developing and testing hypothesis
Using sensitive electronic measuring instruments
Correct Ans
...
Which of the following stages of Plasmodium is diploid?
Merozoite
Sporozoite
Zygote (ookinete)
Gametocyte
Correct Ans
...
Sc
...
A
...
Ed
...
1st Year Biology Solved MCQs (All Punjab Boards)
Which of the following stages of Plasmodium is spindle shaped?
sporozoite
Merzoite
Gametocyte
Ookinete
Correct Ans
...
Which of the following forms of Plasmodium is present in the saliva of mosquito?
Merozoites
Sporozoites
Gametocytes
Zygote
Correct Ans
...
Which of these attack red blood cells?
ookinetes
Gametocytes
Sporozoites
Merozoites
Correct Ans
...
Which of the following is not true of malaria patient?
feels cold and chilly
feels headache
feels appetite
temperature rises up to 106 oF
Correct Ans
...
Nucleus in plant cells was discovered by:
Dutrochet
Robert Brown
Robert Hooke
Schleiden
Correct Ans
...
The pushing out of materials by the cell against the concentration gradient is:
Low transport
Passive transport
Active transport
Moderate transport
Correct Ans
...
Sc
...
A
...
Ed
...
Robert Hooke examined thin slices of cork made up of the bark of:
Pine
Sheesham
Oak
Mulberry
Correct Ans
...
In thin slices of cork Robert Hooke noticed
...
(c)
5
...
Robert Brown observations on Nucleus
Robert Hooke’s observations on Cells
Schwann observations of cells
Schleiden observations on cells
Correct Ans
...
They provide support to the plant body:
Phloem cells
Parenchyma cells
Sclerenchyma cells
Chlorechyma cells
Correct Ans
...
Parenchyma cells are concerned with:
Secretion
Support
Carry Oxygen
Storage of surplus food
Correct Ans
...
Substances cross the cell membrane more easily when they are:
Water soluble
Protein soluble
Alcohol soluble
Lipid soluble
Correct Ans
...
Many substances that are not needed constantly enter the cell by:
Passive transport
Active transport
Negative transport
Regards: SYED ATEEB (M
...
M
...
B
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0301-4870705)
6
1st Year Biology Solved MCQs (All Punjab Boards)
Fast transport
Correct Ans
...
It is a true cell wall in a newly growing cell:
Middle lamella
Secondary wall
Primary wall
Plasma membrane
Correct Ans
...
It is the first to be formed:
Primary wall
Secondary wall
Tertiary wall
Middle lamella
Correct Ans
...
It is a site of certain metabolic pathways:
Cell wall
Plasma membrane
Cytoplasm
A&B
Correct Ans
...
The water percentage of cytosol in the cytoplasm is:
50
60
70
90
Correct Ans
...
New Ribosomes are assembled in the :
Nucleolus
Mitochondria
Endoplasmic Reticulum
Golgi Apparatus
Correct Ans
...
Smooth Endoplasmic Reticulum helps to:
Synthesize proteins
Detoxify the harmful drugs
Prepare food
Decompose proteins
Correct Ans
...
Sc
...
A
...
Ed
...
Morphologically Endoplasmic Reticulum exists in:
Four forms
Three forms
Two forms
One form
Correct Ans
...
The 60S and 40S subunits on attachment with each other form:
100S particle
90S particle
80S particle
70S particle
Correct Ans
...
Proteins are synthesized in the:
Ribosomes
Mitochondria
Nucleus
Nucleolus
Correct Ans
...
They are absent in higher plants:
Plastids
Golgi Apparatus
Cell Membranes
Centrioles
Correct Ans
...
Amino acids (proteins) are present in the cell walls of:
Gymnosperms
Bacteria
Mosses
Angiosperms
Correct Ans
...
Which of the following organelles is present in both prokaryotic and eukaryotic cells?
Chloroplast
Ribosomes
Mitochondria
Golgi Complex
Correct Ans
...
Which of the following features is not shared by prokaryotic and eukaryotic cells?
Ribosome
Cytoplasm
Cell membrane
Regards: SYED ATEEB (M
...
M
...
B
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0301-4870705)
8
1st Year Biology Solved MCQs (All Punjab Boards)
Nuclear membrane
Correct Ans
...
Which of the following cell organelles is present in both plant and animal cells?
Chlorophyll
Plasma membrane
Plastids
Cell wall
Correct Ans
...
Which of the following pair is incorrect?
Ribosome ______________
Protein synthesis
Chloroplast _____________
Photosynthesis
Mitochondria ____________
Fermentation
Plasma membrane___________
Osmosis
Correct Ans
...
Which of the structures is not found in a prokaryotic cell?
Plasma membrane
Nuclear envelope
Ribosome
Cell wall
Correct Ans
...
How may membranes comprise the nuclear envelop?
None
One
Two
Three
Correct Ans
...
Which of the following molecules move regularly from the nucleus to the cytoplasm?
Glycogen
DNA
RNA
Cholesterol
Correct Ans
...
Which of the following cellular organelles extracts energy from glucose and forms ATP molecules:
Lysosome
Chloroplast
Mitochondrion
Chromoplast
Correct Ans
...
Lysosomes contain enzymes capable of:
Regards: SYED ATEEB (M
...
M
...
B
...
0301-4870705)
9
1st Year Biology Solved MCQs (All Punjab Boards)
Aerobic cellular respiration
Digesting part of the cell
Synthesizing protein
Synthesizing lipids
Correct Ans
...
Mitochondria are found:
in all cells
only in plant cells
only in animal cells
in all eukaryotic cells
Correct Ans
...
Green pigments capable of capturing the energy of sunlight are located within the:
Golgi complex
Endoplasmic complex
Chloroplast
Cell wall
Correct Ans
...
The two types of cellular organelles that transform energy are:
Chromoplasts and leucoplast
Mitochondria and chloroplast
Mitochondria and Chromoplasts
Chloroplasts and leucoplasts
Correct Ans
...
The plastids that give fruits and flowers their orange and yellow colours are the:
leucoplasts
chloroplasts
Chromoplasts
Proplasts
Correct Ans
...
The main function of the plasma membrane is to:
synthesize ribosomes
Control what goes into and out of the cell
Allow all kinds of substances to enter the cell
Move the cell from place to place
Correct ans
...
Plant cells are connected by channels through their walls called:
Plasmodesmata
desmosomes
middle lamella
Regards: SYED ATEEB (M
...
M
...
B
...
0301-4870705)
10
1st Year Biology Solved MCQs (All Punjab Boards)
non of these
Correct ans
...
In the fluid mosaic membrane model the lipid bilayer:
is sandwiched between two protein layers
has protein embedded in it
lies on top of a single protein layer
is covered by a single protein layer
correct ans
...
An input of energy is required for which one of the following?
diffusion
osmosis
passive transport
active transport
Correct ans
...
Which of the following cytoplamic organelles is not bounded by membrane:
Mitochodrion
Lysosome
Ribosome
Plastids
Correct Ans
...
Which of the following bodies is not bounded by a double membrane structure?
mitochondrion
chloroplast
Lysosome
Nucleus
Correct Ans
...
Which of the following cell organelles cause a decrease in the concentration of organic material in the cell?
Golgi bodies
Chloroplast
Ribosome
Mitochondrion
Correct Ans
...
Which of the following cell organelles is not involved in the sequence of events from synthesis of an enzyme to its excretion?
Ribosome
Lysosome
Golgi apparatus
Endoplasmic reticulum
Correct Ans
...
A lipid molecule in the plasma membrane has a head and two tails
...
Sc
...
A
...
Ed
...
B
43
...
B
44
...
C
45
...
D
46
...
d
47
...
D
CHAPTER 3
Choose the most appropriate answer:
1
...
D
Regards: SYED ATEEB (M
...
M
...
B
...
0301-4870705)
12
2
...
D
3
...
B
4
...
A
5
...
D
6
...
C
7
...
A
8
...
Sc
...
A
...
Ed
...
C
9
...
C
10
...
B
11
...
C
12
...
D
13
...
C
14
...
Sc
...
A
...
Ed
...
B
15
...
B
16
...
C
17
...
A
18
...
C
19
...
D
20
...
A
21
...
Sc
...
A
...
Ed
...
C
22
...
B
23
...
A
24
...
D
25
...
C
26
...
A
27
...
C
Regards: SYED ATEEB (M
...
M
...
B
...
0301-4870705)
16
28
...
C
29
...
B
30
...
A
31
...
D
32
...
B
33
...
B
34
...
Control the equilibrium point of reaction
Change the direction of reaction
Regards: SYED ATEEB (M
...
M
...
B
...
0301-4870705)
17
1st Year Biology Solved MCQs (All Punjab Boards)
Correct ans
...
The enzyme sucrase act on:
sucrose only
sucrose and starch
any disaccharide
glycogen
Correct Ans
...
Which of the following forms part of coenzyme:
Diastase
Lipase
Vitamin
Lysine
Correct Ans
...
An enzyme promotes a chemical reaction by:
Lowering the energy of activation
Causing the release of heat
Increasing molecular motion
Both A & B
Correct Ans
...
Which of the following releases greatest amount of energy:
Carbohydrates
Lipid
Water
Nucleic acid
Correct ans
...
Which of the following is an example of carbohydrate:
enzymes
waxes
ribose
insulin
Correct ans
...
DNA molecule:
has a sugar-phosphate backbone
is single stranded
has a certain sequence of amino acids
has a uracil base in its nucleotide
Correct ans
...
Sc
...
A
...
Ed
...
1st Year Biology Solved MCQs (All Punjab Boards)
The functional group COOH is:
Acidic
Basic
Never ionized
All of these
Correct Ans
...
Which of these is nondigestible by man:
cellulose
maltose
starch
glycogen
Correct Ans
...
A fatty acid is unsaturated if it:
contains hydrogen
contains double bonds between carbon atoms
contains an acidic group
contains no double bonds
Correct ans
...
Glucose in solution forms a ring called:
a
...
(c)
45
...
(d)
46
...
(a)
47
...
(b)
Regards: SYED ATEEB (M
...
M
...
B
...
0301-4870705)
19
48
...
(c)
49
...
(c)
50
...
(b)
51
...
(b)
52
...
(c)
53
...
(b)
54
...
Sc
...
A
...
Ed
...
(c)
55
...
(c)
56
...
(c)
57
...
(a)
58
...
(b)
59
...
(c)
60
...
Sc
...
A
...
Ed
...
(d)
61
...
(b)
CHAPTER 4
Choose the most appropriate answer:
1
...
(a)
2
...
(d)
3
...
(d)
4
...
(a)
5
...
Sc
...
A
...
Ed
...
(b)
6
...
(c)
7
...
(d)
8
...
(a)
9
...
(d)
10
...
(b)
11
...
(a)
12
...
Sc
...
A
...
Ed
...
(a)
13
...
(b)
14
...
(c)
15
...
(b)
16
...
(c)
17
...
(c)
18
...
Sc
...
A
...
Ed
...
(d)
19
...
(d)
20
...
(d)
21
...
(c)
22
...
(b)
23
...
chiasma
interkinesis
crossing over
synapsis
Correct Ans
...
The points at which crossing over has taken place between homologous chromosomes are called
Chiasmata
Centromeres
Synapsis
Centrosomes
Correct Ans
...
Crossing over occurs during
Regards: SYED ATEEB (M
...
M
...
B
...
0301-4870705)
25
1st Year Biology Solved MCQs (All Punjab Boards)
leptotene
zygotene
pachytene
diplotene
Correct Ans
...
During what phase of meiosis tetrads are form?
prophase I
prophase II
metaphase I
metaphase II
Correct Ans
...
During what phase of meiosis the nuclear envelop breaks down?
prophase I
metaphase
anaphase I
telophase I
Correct Ans
...
Which of the following is caused by bacteria?
Tetanus
Measles
Malaria
Ringworm
Correct Ans
...
Food can be preserved when pH of the medium is:
acidic
basic
neutral
none of these
Correct Ans
...
They play a role in the making of dairy products:
Viruses
Bacteria
Algae
Plasmodium
Correct ans
...
Viruses belong to the group:
Prokaryotes
Regards: SYED ATEEB (M
...
M
...
B
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0301-4870705)
26
1st Year Biology Solved MCQs (All Punjab Boards)
Eukaryotes
Monera
None of these
Correct Ans
...
Common cold is caused by:
Bacteria
Viruses
Fungi
Plasmodium Correct Ans
...
They fix atmospheric Nitrogen:
Virus
Fungi
Bacteria
Both A & B
Correct Ans
...
In lytic life cycle bacterial cell:
Continues its normal life processes
Bursts and dies
Starts division
Forms endospore
Correct Ans
...
Amino acids are present in the cell wall of:
Bryophytes
Fungi
Bacteria
Gymnosperms
Correct ans
...
Inside photosynthetic bacteria, Chlorophyll is:
Localized in Chloroplast
Present inside Mitochondria
Dispersed in the cytoplasm
Absent
Correct Ans
...
In blue-green algae nitrogen fixation occurs in specialized cells called:
Harmogonia
Akinetes
Heterocysts
Zygospores
Correct Ans
...
Sc
...
A
...
Ed
...
Under ideal condition a bacterial cell divides about every 20 minutes
...
How much
time will it take to fill a test tube of double size
...
(b)
12
...
(c)
13
...
(b)
14
...
(a)
15
...
Correct ans
...
(b)
Regards: SYED ATEEB (M
...
M
...
B
...
0301-4870705)
28
17
...
(c)
18
...
(c)
19
...
(b)
20
...
(b)
21
...
(a)
22
...
(d)
23
...
Sc
...
A
...
Ed
...
(b)
24
...
(d)
25
...
(c)
26
...
(b)
27
...
(b)
28
...
(d)
29
...
(d)
30
...
Sc
...
A
...
Ed
...
(c)
31
...
(d)
32
...
(b)
33
...
(d)
34
...
(b)
35
...
(b)
36
...
(c)
Regards: SYED ATEEB (M
...
M
...
B
...
0301-4870705)
31
37
...
(b)
38
...
(a)
39
...
(c)
40
...
(d)
41
...
(c)
42
...
(b)
Regards: SYED ATEEB (M
...
M
...
B
...
0301-4870705)
32
43
...
(b)
CHAPTER 6
Choose the most appropriate answer:
1
...
(d)
2
...
Sc
...
A
...
Ed
...
(a)
3
...
(a)
4
...
(d)
5
...
Correct Ans
...
(c)
7
...
(d)
8
...
(b)
9
...
Sc
...
A
...
Ed
...
(a)
10
...
(d)
11
...
(a)
12
...
(b)
13
...
(d)
14
...
(d)
15
...
(a)
16
...
Sc
...
A
...
Ed
...
(c)
17
...
(c)
18
...
(c)
19
...
(a)
20
...
(c)
21
...
(c)
22
...
(d)
23
...
Sc
...
A
...
Ed
...
(c)
24
...
(a)
25
...
(d)
26
...
(c)
27
...
(d)
28
...
(a)
29
...
Sc
...
A
...
Ed
...
(d)
30
...
(d)
31
...
(d)
32
...
(b)
33
...
(a)
34
...
(c)
35
...
(c)
36
...
(d)
37
...
Sc
...
A
...
Ed
...
(a)
38
...
(c)
39
...
(b)
40
...
(c)
41
...
(b)
42
...
(b)
43
...
(a)
44
...
Sc
...
A
...
Ed
...
(c)
45
...
(d)
46
...
(d)
47
...
(c)
48
...
(c)
49
...
Correct Ans
...
(d)
Regards: SYED ATEEB (M
...
M
...
B
...
0301-4870705)
40
51
...
(a)
52
...
(c)
53
...
(b)
54
...
(d)
55
...
(b)
56
...
(d)
CHAPTER 7
Regards: SYED ATEEB (M
...
M
...
B
...
0301-4870705)
41
1st Year Biology Solved MCQs (All Punjab Boards)
Choose the most appropriate answer:
1
...
(d)
2
...
(c)
3
...
(c)
4
...
(b)
5
...
(b)
6
...
(d)
7
...
Sc
...
A
...
Ed
...
(a)
8
...
(d)
9
...
(c)
10
...
(b)
11
...
(b)
12
...
(a)
13
...
Sc
...
A
...
Ed
...
(b)
14
...
(b)
15
...
(d)
16
...
(b)
17
...
(c)
18
...
(a)
19
...
(b)
20
...
Sc
...
A
...
Ed
...
(c)
21
...
(d)
22
...
(a)
23
...
(b)
24
...
(c)
25
...
(b)
Regards: SYED ATEEB (M
...
M
...
B
...
0301-4870705)
45
26
...
(d)
CHAPTER 8
Choose the most appropriate answer:
1
...
(d)
2
...
(c)
3
...
(c)
4
...
(a)
5
...
(a)
Regards: SYED ATEEB (M
...
M
...
B
...
0301-4870705)
46
6
...
(c)
7
...
(C)
8
...
(d)
9
...
(c)
10
...
(c)
11
...
(c)
Regards: SYED ATEEB (M
...
M
...
B
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0301-4870705)
47
12
...
(d)
13
...
(d)
14
...
(d)
15
...
(c)
16
...
(b)
17
...
(d)
18
...
(a)
Regards: SYED ATEEB (M
...
M
...
B
...
0301-4870705)
48
19
...
(a)
20
...
(c)
21
...
(d)
22
...
(c)
23
...
(b)
24
...
(a)
25
...
Sc
...
A
...
Ed
...
(d)
26
...
(b)
27
...
(d)
28
...
(a)
29
...
(a)
30
...
(b)
31
...
Sc
...
A
...
Ed
...
(c)
32
...
(a)
33
...
(c)
34
...
(b)
35
...
(c)
36
...
(b)
37
...
Sc
...
A
...
Ed
...
(a)
38
...
(d)
39
...
(c)
40
...
(b)
41
...
(c)
42
...
(d)
43
...
(c)
Regards: SYED ATEEB (M
...
M
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B
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52
44
...
(b)
45
...
(c)
46
...
rhizophore
radical
suspensor
prothallus
Correct Ans
...
Which of the following belongs to Gymnosperm group:
Cedrus
Wheat
Sugar cane
Tobacco
Correct Ans
...
The leaves produced by the Pinus plant are:
One type
Two types
Three types
Four types
Correct Ans
...
Pinus produces:
Cones
Fruits
Flowers
None of these
Correct Ans
...
Sc
...
A
...
Ed
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1st Year Biology Solved MCQs (All Punjab Boards)
The numb of microsporangia in each sporophyll of male cone of Pinus is:
One
Two
Three
Four
Correct Ans
...
Megaspore divides by mitosis and forms:
Male gametophyte
Male Sporophyte
Female gametophyte
Female Sporophyte
6
...
(c)
The seed of Pinus germinates and forms new:
Sporophyte
Micro gametophyte
Thallophyte
Mega gametophyte
Correct Ans
...
The endosperm in Angiosperm is:
Monoploid
Triploid
Diploid
Teraploid
Correct Ans
...
The Endosperm in Gymnosperms is:
Triploid
Diploid
Monoploid
Tetraploid
Correct Ans
...
Antheridia are produced by:
Pine
Pea
Mustard
None of these
Correct Ans
...
They lack secondary growth:
Gymnosperms
Angiosperms
Pteredophytes
Both A & B
Correct Ans
...
Sc
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A
...
Ed
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1st Year Biology Solved MCQs (All Punjab Boards)
Which of the following produce flowers?
Bryophytes
Pterdophytes
Gymnosperms
Angiosperms
Correct Ans
...
When calyx and corolla are not distinguishable, they are collectively called:
Panicle
Pedicel
Protoplast
Perianth
Correct Ans
...
It is a racemose inflorescence in which the main axis is elongated and the flowers are sessile:
Corymb
Umbel
Capitulum
Spike
Correct Ans
...
In Cassia fistula the inflorescence is:
Typical raceme
Typical cyme
Umbel
Catkin
Correct Ans
...
A branched raceme is called:
Panicle
Capitulum
Umbel
Corymb
Correct Ans
...
In which of the following, flowers are sessile and crowded together on a short axis?
Umbel
Corymb
Panicle
Capitulum
Correct Ans
...
Iberis (Candytuft) is an example of:
Spike
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1st Year Biology Solved MCQs (All Punjab Boards)
Catkin
Corymb
Cyme
Correct Ans
...
In Euphorbia, the inflorescence is:
Uniparous
Biparous
Multiparous
None of these
Correct Ans
...
In wind pollinated flowers the petals are:
Large
Coloured
Scented
Small and dry
Correct Ans
...
Triticum aestivum belongs to the family:
Solanaceae
Poaceae (Graminae)
Brassicaceae
Leguminosae
Correct Ans
...
Female gametophyte of an angiosperm consists of:
3 cells
5 cells
7 cells
9 cells
Correct Ans
...
The male gametophyte of an angiosperm consists of:
one cell
2 cells
3 cells
4 cells
Correct Ans
...
Endosperm mother cell is:
Monoploid
Diploid
Triploid
Tetraploid
Correct Ans
...
Their cotyledons absorb the endosperm tissue and are greatly enlarged:
Castor oil
Rice
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B
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1st Year Biology Solved MCQs (All Punjab Boards)
Corn
Bean
Correct Ans
...
The protective covering (integument) of the ovule is transformed into:
Embryo
Cotyledon
Hypocotyl
Seed coat (testa)
Correct Ans
...
Which of the following produces winged fruits ?
Guavas
Cocklebur
Dodonaea
Coconut
Correct Ans
...
It is an underground stem that is short, thickened, and fleshy containing food material:
Rhizome
Tuber
Corm
Bulb
Correct Ans
...
Which of the following type of stem is found in iris:
Rhizome
Tuber
Corm
Bulb
Correct Ans
...
Potato is an example of
Rhizome
Tuber
Corm
Bulb
Correct Ans
...
Organisms in this kingdom are made of prokaryotic cells:
Protista
Plantae
Fungi
Monera
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B
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1st Year Biology Solved MCQs (All Punjab Boards)
Correct Ans
...
Ovary is oblique in:
Brassicaceae (Cruciferae)
Solanaceae
Leguminosae
Graminae
Correct Ans
...
Raphanus sativus is the botanical name of:
Turnip
Tomato
Radich
Mustard
Correct Ans
...
Their roots contain nitrogen fixing bacteria:
Tomato
Potato
Legumes
Maize
Correct Ans
...
The sporangia of conifers are located on the
tips of needles
scales of the cones
bases of the needles
axils of the branches
Correct Ans
...
The microspore of conifers divides by mitosis to produce a
multicellular embryo
male Sporophyte
male gametophyte
female gametophyte
Correct Ans
...
The plant body of a Pinus is
gametophyte
saprophyte
Sporophyte
Parasite
Correct Ans
...
In Pinus plant megaspore
is released from the asporangium before germination
is never released from the mega sporangium
is released from the mega sporangium after germination
develops into male gametophyte
Correct Ans
...
Sc
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A
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Ed
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1st Year Biology Solved MCQs (All Punjab Boards)
In how much time the process of seed formation is completed in Pinus?
one year
two years
three years
four years
Correct Ans
...
Which of the following is not shared by both the Pteridophytes and Gymnosperms?
presence of vascular tissues
presence of archegonia
presence of antheridia
dominant Sporophyte generation
Correct Ans
...
Which of the following characters are shared by both the Gymnosperms and Angiosperms?
Heterospory
Seed production
Pollen tube formation
All of these
Correct Ans
...
Which of the following characters is not shared by both the Gymnosperms and Angiosperms?
presence of vessels
pollen tube
seed production
Heterospory
Correct Ans
...
Which of these is not the characteristic of an Angiosperm?
enclosed seed
presence of archegonia
double fertilization
triploid endosperm
Correct Ans
...
Which of the following is an example of spike?
Brassica
Achyranthus
Iberis
Cassia
Correct Ans
...
Which of the following is an example of Biparous cyme?
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1st Year Biology Solved MCQs (All Punjab Boards)
Silene
Tradescantia
Begonia
Euphorbia
Correct Ans
...
In which of the following endosperm is involved in the process of fertilization?
Gymnosperms
Pteredophytes
Angiosperms
Algae
Correct Ans
...
Which of the following is part of an embryo?
hypocotyls
radical
epicotyl
all of these
Correct Ans
...
Which of the following is not part of an embryo?
cotyledon
endosperm
plumule
epicotyl
Correct Ans
...
In which of the following the endosperm tissue continues to grows as the ovule matures into a seed?
corn
bean
pea
gram
Correct Ans
...
Which of the following is not the feature of flowers pollinated by wind?
small petals
abundance of pollen grains
production of nectar
large feathery structure of the tip of pistils
Correct Ans
...
Which of the following is the character of insect pollinated flowers?
large petals
coloured petals
production of nectar
all of these
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1st Year Biology Solved MCQs (All Punjab Boards)
Correct Ans
...
In the life cycle of angiosperms meiosis occurs
during seed formation
before seed formation
after spore formation
during gametes formation
Correct Ans
...
Which of the following is not the part of Sporophyte of an angiosperm?
sperm
roots
leaves
stem
Correct Ans
...
The corn grain is a/an
seed
embryo
spore
fruit with a single seed
Correct Ans
...
The number of cotyledons present in bean seed is:
one
two
three
four
Correct Ans
...
Which of the following is the number of cotyledons in corn seed?
one
two
three
four
Correct Ans
...
The fruits of which of the following are provided with hooks?
Dodonaea
Cocklebur
Coconut
Grapes
Correct Ans
...
Which of the following generally possesses only primary wood?
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B
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1st Year Biology Solved MCQs (All Punjab Boards)
Monocotyledons
Gymnosperms
Dicotyledons
All of these
Correct Ans
...
Which of the following fruits are parthenocarpic?
apples
oranges
mangoes
bananas
Correct Ans
...
In which of the following the thalamus forms the edible part of the fruit?
pea
apple
grapes
mango
Correct Ans
...
The chief characteristic of the succulents is that the bulk of the plant body is composed of
food storage cells
water storage cells
reproductive cells
dead cells
Correct Ans
...
Which of the following is reduced if the leaves are succulents in the succulent plants?
stem
roots
flowers
fruits
Correct Ans
...
Which of the following is not the characteristic of the succulents?
well developed cuticle
low rate of transpiration
volume of the shoot is less in proportion to the surface exposed
volume of the shoot is great in proportion to the surface exposed
Correct Ans
...
Which of the following has stored food in the form of sugars?
stem tuber
bulb
corm
rhizome
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B
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1st Year Biology Solved MCQs (All Punjab Boards)
Correct Ans
...
Which of the following established rules for binomial nomenclature?
H
...
Gram
C
...
Whittaker
Stanley
Correct Ans
...
Which of the following established five kingdom system of the living organisms?
Stanley
C
...
Whittaker
Correct Ans
...
Which of the following is not the characteristic of Gymnosperm?
stem
root
flower
leaf
Correct Ans
...
Which of these is an example of uniparous cyme?
Euphorbia
Tradescantia
Ipomoea
Achyranthes
Correct Ans
...
Which of the following is the approximate number of species in the family Brassicaceae (Cruciferae)?
2000
3000
4000
5000
Correct Ans
...
Sisymbrium irio belongs to the family
Solanaceae
Fabaceae
Brassicaceae (Cruciferae)
Poaceae
Correct Ans
...
Which of the following belongs to the family Solanaceae?
Cicer arietinum
Iberis amara
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B
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1st Year Biology Solved MCQs (All Punjab Boards)
Zea mays
Capsicum annum
Correct Ans
...
In which of the following families Gynoecium consists of only one pistil?
Leguminosae (Fabaceae)
Solanaceae
Brassicaceae
None of these
Correct Ans
...
Which of the following are adapted to survival under conditions of a limit supply of water?
Bryophytes
Hydrophytes
Xerophytes
Mesophytes
Correct Ans
...
Which of the following has hollow stem between the nodes?
Poaceae (Graminae)
Solanaceae
Leguminosae
All of these
Correct Ans
...
In which of the following flowers are produced in dense spikes?
Solanaceae
Leguminosae
Brassicaceae
Graminae
Correct Ans
...
Which of these is mismatched?
pollen grain _______ male gametophyte
sunflower ________ umbel
Gymnosperm _________ cones
Potato _______ stem tuber
Correct Ans
...
Which of these is found in seed plants?
complex vascular system
pollen grain to replace swimming sperm
retention of the megaspore with in the mega sporangium
all of these
Correct Ans
...
Sc
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A
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Ed
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1st Year Biology Solved MCQs (All Punjab Boards)
Which of these is mismatched?
anthers _______ produces microsporangia
pistil ______ produces pollen
ovule ______ becomes seed
ovary _____ becomes fruit
Correct Ans
...
Which of the following is monocot family?
Cruciferae
Solanaceae
Leguminosae
Graminae
Correct Ans
...
Which of the following are seedless vascular plants?
mosses
horsetails
liverworts
legumes
Correct Ans
...
All embryophytes have life cycle with
seeds
flowers
fruits
alternation of generation
Correct Ans
...
Which of the following contains stored food for the germination of embryo?
stigma
endosperm
pollen grain
root
Correct Ans
...
In which of the following food is not stored in the endosperm of the seed?
corn
castor oil
bean
wheat
Correct Ans
...
Which of the following stores food in the cotyledon of the seed?
corn
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1st Year Biology Solved MCQs (All Punjab Boards)
wheat
castor oil
bean
Correct Ans
...
Which of these does not develop from the zygote of an angiosperm?
endosperm
cotyledon
radical
plumule
Correct Ans
...
Which of these remain underground during hypogeal mode of germination?
plumule
cotyledon
epicotyl
none of these
Correct Ans
...
Phylogeny describes a species
reproductive compatibilities with other species
evolutionary history
morphological similarities with other species
geographic distribution
Correct Ans
...
Of all the taxa, the only one that exists in nature as a biologically cohesive unit is the:
species
genus
order
kingdom
Correct Ans
...
The part of the embryo between the point of attachment of cotyledons and the radicle is called the:
hypocotyls
epicotyl
suspensor
plumule
Correct Ans
...
The part of the axis of embryo above the attachment of cotyledon is called the
plumule
epicotyl
radicle
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1st Year Biology Solved MCQs (All Punjab Boards)
hypocotyl
Correct Ans
...
In the seeds of leguminous plants, food is stored in the
endosperm
testa
taegmen
cotyledons
Correct Ans
...
Which of the following is the asexual method of reproduction in Protozoa?
Isogamy
An-isogamy
Oogamy
Budding
Correct Ans
...
Which of the following sexual method of reproduction is absent in Protozoa?
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B
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1st Year Biology Solved MCQs (All Punjab Boards)
Oogamy
Isogamy
Anisogamy
Conjugation
Correct Ans
...
Which of these is shelled protozoan?
Plasmodium
Paramecium
difflugia
Amoeba
Correct Ans
...
Which of these is not the characteristic of Proifera?
aquatic habitat
pores
Multicellular
Presence of organs
Correct Ans
...
Members of the porifera reproduce sexually by
Oogamy
Isogamy
As-isogamy
Somatogamy
6
...
(a)
Which of these is a fresh water sponge?
Sycon
Leucosolenia
Spongilla
Euplectella
Correct Ans
...
Coelenterates are:
predominantly freshwater
predominantly marine
predominantly terrestrial
terrestrial and freshwater
Correct Ans
...
Which of these is not the character of Coelenterates?
primitive plan of organization
no left and right sides of the body
radical symmetry
bilaterial symmetry
Correct Ans
...
Sc
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A
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Ed
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1st Year Biology Solved MCQs (All Punjab Boards)
The sac-like internal digestive cavity of coelenterates is called:
enteron
nematocytes
exeron
stomach
Correct Ans
...
Which of these is the characteristic of coelenterates?
digestive cavity with a single aperture
presence of nematocytes
presence of tentacles
all of these
Correct Ans
...
The units of the colonies of coelenterates is called:
zoospores
zooids
cysts
akinetes
Correct Ans
...
Which of the following is polymorphism in coelenterates?
production of one type of zooids
production of two types of zooids
production of may types of zooids
all of these
Correct Ans
...
Which of these are sexually reproductive zooids?
medusae
hydroids
nematocytes
none of these
Correct Ans
...
Which of the following produce hard exoskeletion?
jelly fish
Hydra
Obelia
Corals
Correct Ans
...
Which of these develops from the endoderm?
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nervous system
lining of the gut
reproductive system
skeleton
Correct Ans
...
Which of these develops from the mesoderm?
circulatory system
integumentary system
nervous system
digestive system
Correct Ans
...
Organisms possessing true body cavity are called:
acoelomata
coelomata
monoblastic
diplobalstic
Correct Ans
...
Which of these are acoelomatic triploblastic animals?
corals
porifera
platyhelminthes
protozoans
Correct Ans
...
Which of the following character is exhibited by platyhelminthes?
eggs without yolk
simple reproductive system
all are parasites
none of these
Correct Ans
...
Which of these belong to platyhelminthes?
Ascaris
Fasciola
Trichinella
Hydra
Correct Ans
...
Sc
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A
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Ed
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1st Year Biology Solved MCQs (All Punjab Boards)
Trichinella belongs to:
protozoa
platyhelminthes
nematode
coelenterate
Correct Ans
...
Which of the following has a body cavity called pseudocoelom?
platyhelminthes
coelenterate
protozoa
nematode
Correct Ans
...
Which of the following is parasite in the intestine man?
Fasciola
Plasmodium
Taenia
Planaria
Correct Ans
...
Which of these belong to the phylum nematoda?
planaria
dracunculus
corals
planaria
Correct Ans
...
Which of the following causes sleeping sickness?
vorticella
Ascaris
Trypanosome
Taenia
Correct Ans
...
Which of the following has segmented body?
coelenterate
protozoa
platyhelminthes
annelida
Correct Ans
...
Sc
...
A
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Ed
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1st Year Biology Solved MCQs (All Punjab Boards)
Which of these is not true of Annelida?
Presence of cuticle around the body
Segmented body
Lack of blood vascular system
Presence of true body cavity
Correct Ans
...
Which of these possesses true body cavity (coelom)?
Annelia
Nematoda
Platyhelminthes
Coelenterata
Correct Ans
...
Which of these is an example of Annelida?
Ascaris
Chaetopteris
Trichinella
Taenia
Correct Ans
...
Of all the animal species in the animal kingdom the number of arthropod species constitutes almost:
75%
50%
25%
10%
Correct Ans
...
The number of pairs of legs in insects are:
one
two
three
four
Correct Ans
...
Mollusks are:
presence of envelop around the body
highly organized body with complex systems
segmented body
bilaterally symmetrical body
Correct Ans
...
Which of these is the habitat of mollusca?
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1st Year Biology Solved MCQs (All Punjab Boards)
freshwater
marine
mountains
all of these
Correct Ans
...
Coiled shell is present in
bivalves
gastropods
cephalopods
all of these
Correct Ans
...
Which of the following are exclusively marine?
Mollusca
Annelida
Nematoda
Echinodermata
Correct Ans
...
Which of these is not true of Echinodermata?
coelomata
bilaterally symmetrical
absence of brain
absence of head
Correct Ans
...
Which of the following protozoans lives in the gust termites and helps them digest cellulose?
Plasmodium
Amoeba
Trichonympha
Trypanosome
Correct Ans
...
Most sponges are
bilaterally symmetrical
radially symmetrical
vertically symmetrical
asymmetrical
Correct Ans
...
Water exits from a sponge through the
spicule
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1st Year Biology Solved MCQs (All Punjab Boards)
osculum
choanocyte
choanocyte
Correct Ans
...
Which of the following is a radially symmetrical animal?
Planaria
Rotifer
Fluke
Sea anemone
Correct Ans
...
The body cavity of roundworms is called
acoelom
pseudo-acoelom
pseudo coelom
coelom
Correct Ans
...
The characters of vertebrates are:
presence of vertebral column
internal living skiliton
three main body parts
all of these
Correct Ans
...
Vertebrates are:
bilaterally symmetrical
radially symmetrical
vertically symmetrical
asymmetrical
Correct Ans
...
Which of these is not true of Pisces?
presence of gills for breathing
tail as organ of locomotion
undeveloped skull
absence of middle ear
Correct Ans
...
Which of these are regarded as the first of the vertebrates?
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B
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1st Year Biology Solved MCQs (All Punjab Boards)
bony fishes
jawless fishes
cartilaginous fishes
all of these
Correct Ans
...
Sharks belong to
cartilaginous fishes
bony fishes
jawless fishes
none of these
Correct Ans
...
Jellyfish fish belongs to
bony fishes
cartilaginous fishes
jawless fishes
none of these
Correct Ans
...
Which of the following are without jaws?
dogfish
trout
pike
none of these
Correct Ans
...
Which of these has cartilaginous skeleton?
sharks
eel
pike
rohu
Correct Ans
...
Which of the following is the character of amphibians?
living both in water and on land
cold blooded
least numerous of the terrestrial vertebrates
all of these
Correct Ans
...
Which of these is not true of amphibians?
breathing by gills in the larval stage
breathing by lunge in the adult stage
mostly internal fertilization
cold blooded
Correct Ans
...
Salamander is an example of
bony fishes
jawless fishes
amphibians
cartilaginous fishes
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B
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Correct Ans
...
Which of the following is not the character of amphibians?
cold blooded
do not depend on water for reproduction
hibernate in winter
breath by gills in the larval stage
Correct Ans
...
Reptiles are
warm blooded
cold blooded
with internal fertilization
with a scaly skin
Correct Ans
...
Which of these is not true of reptiles?
internal fertilization
predominantly terrestrial
tetrapods
dependent on water for reproduction
Correct Ans
...
Which of these is not the character of reptiles?
fertilization is internal
eggs are large shelled
lay eggs in water
cold blooded
Correct Ans
...
Which of the following is the character of reptiles?
dipods
tetrapods
pentapods
polypods
Correct Ans
...
The heart of reptiles is
imperfectly two chambered
imperfectly three chambered
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1st Year Biology Solved MCQs (All Punjab Boards)
imperfectly four chambered
eight chambered
Correct Ans
...
Which of the following is true of reptiles?
do not lay eggs
lay eggs in water
lay eggs on land
eggs are without yolk
Correct Ans
...
In reptiles amnion and allantois are extra membranes of:
egg
sperm
zygote
embryo
Correct Ans
...
Which of these is an example of amphibian?
sea horse
rohu
newt
snake
Correct Ans
...
Which of these is extinct reptile?
Turtles
Brontosaurus
Snake
Alligator
Correct Ans
...
Which of these do the Reptiles and Aves not share?
Similar embryonic development
Presence of forelimbs
Shelled eggs
Scales on hind limbs
Correct Ans
...
Which of these is not true of birds?
cold blooded
heavy bones
weak pectoral muscles
all of these
Correct Ans
...
Which of the following birds cannot fly?
Rhea
Cassowary
Penguin
All of these
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B
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Correct Ans
...
In mammals fertilization is
absent
internal
external
both internal and external
Correct Ans
...
The ear of mammals is divided into
three parts
four parts
five parts
six parts
Correct Ans
...
The skin of mammals is provided with sweat glands for
respiration
temperature regulation
oily secretion
blood movement regulation
Correct Ans
...
Which of these is not the mammalian character?
presence of hairs
right aortic arch
diaphragm
well developed large brain
Correct Ans
...
Which of these is not true of the egg laying mammals?
feeding young with milk
presence of hairs
diaphragm
right aortic arch
Correct Ans
...
Which of these are the placental mammals?
prototherians
metatherians
eutherians
all of these
Correct Ans
...
Metatherians
lay eggs
have to teeth in the adult
do not have true placenta
have spiny skin
Correct Ans
...
Sc
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A
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Ed
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1st Year Biology Solved MCQs (All Punjab Boards)
Flying mammals are included
Rodentia
Chiroptera
Primates
Cetacean
Correct Ans
...
Elephants are included in
carnivore
perissodactyla
artiodactyla
proboscidia
Correct Ans
...
Artiodactyla include
moles
cattle
horses
wolves
Correct Ans
...
In Which of the following young are born in rudimentary conditions?
kangaroos
zebras
elephants
bats
Correct Ans
...
The vertebrates are
all unisexual
all hermaphrodite
some unisexual and some hermaphrodite
all neuter (without sex)
Correct Ans
...
Sc
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A
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Ed
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The water of guttation is forced out of the leaves by:
Diffusion
Root Pressure
Imbibition
Active transport
Correct Ans
...
The movement of solvent molecules through a semi-permeable membrane from a region of low solute concentration to a
region of high solute concentration is:
Diffusion
Plasmolysis
Osmosis
Active transport
Correct Ans
...
The osmotic pressure of a solution
increases with increase in concentration of solute
decrease with increase in concentration of solute
remains unchanged with increase in concentration of sol
none of these
Correct Ans
...
The transport of substances from a region of its lower concentration to its higher concentration is called:
Osmosis
Imbibition
Active transport
Passive transport
Correct Ans
...
Sc
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A
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Ed
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1st Year Biology Solved MCQs (All Punjab Boards)
The taking up of a liquid by a substance with the resultant swelling in volume is called:
Plasmolysis
Imbibitions
Diffusion
Active transport
Correct Ans
...
Germination of seed involves the rupturing of seed coat because of:
Osmosis
Imbibitions
Diffusion
Active transport
Correct Ans
...
The shrinkage of protoplasm due to ex-osmosis of water from the cell is called:
Osmosis
Deplasmolysis
Plasmolysis
Imbibition
Correct Ans
...
The process where by water moves through the plants is known as :
Transpiration
Translocation
Guttation
Osmosis
Correct Ans
...
Which of the following conducts water inside plant body?
phloem
xylem
cortex
pith
Correct Ans
...
The exudation of water drops from the leaves of intact plants is:
guttation
transpiration
evaporation
transportation
Correct Ans
...
In which of the following assimilates move along the concentration gradient?
sieve tubes
xylem vessels
trachieds
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M
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B
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fibers
Correct Ans
...
Which of the following percentage of transpiration usually occurs through the stomata?
30%
50%
60%
90%
Correct Ans
...
The combined area of total stomatal pores as compared to the total leaf area is almost:
1-2%
3-4%
5-6%
7-8%
Correct Ans
...
The number of stomata per square centimeter of leaf surface of tobacco leaf is almost:
1200
2100
12000
21000
15
...
(c)
The processes involved in stomatal transpiration are:
2
4
8
6
Correct Ans
...
When leaf cells are fully turgid, the transpiration rate is:
high
medium
low
not affected
Correct Ans
...
The rate of water evaporation doubles for every temperature rise of:
10 oC
20 oC
5 oC
25 oC
Correct Ans
...
Oxygen gas released during photosynthesis is comes from:
Water
CO2
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M
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B
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1st Year Biology Solved MCQs (All Punjab Boards)
Glucose
None of these
Correct Ans
...
Chlorophylls c, d and e are present in:
Angiosperms
Gymnosperms
Bacteria
Algae
Correct Ans
...
Chlorophyll is a large molecule with a central core of:
Iron
Sulphur
Nitrogen
Magnesium
Correct Ans
...
Chlorophyll mainly absorbs red light and:
Green light
Yellow light
Blue light
Orange light
Correct Ans
...
In the photo system II, high energy electrons of chlorophyll molecule are accepted by:
PC
PQ
NAD
ATP
Correct Ans
...
During light reaction of photosynthesis, ATP formation occurs when electrons are transported between cytochrome:
a and b
b and c
b and f
c and f
Correct Ans
...
ATP
PC
NADP
PQ
High energy electrons in photo system I are transferred from FRS to:
Correct Ans
...
Sc
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A
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Ed
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1st Year Biology Solved MCQs (All Punjab Boards)
As a first identifiable product of the dark reaction is:
PGA
PGAL
Glucose
RuBP
Correct Ans
...
Light reaction of photosynthesis occurs in:
Granum
Stroma
Mitochondria
Leucoplast
Correct Ans
...
The break down of water molecule (photolysis) in photosynthesis occurs during:
light reaction
dark reaction
Glycolysis
Krebs cycle
Correct Ans
...
The wave lengths of red light are in the range of:
400-500 nm
500-550 nm
600-650 nm
700-750 nm
Correct Ans
...
Which of the following are the principal photoreceptors in the chloroplast of green plants?
Chlorophyll b and c
Chlorophyll a and b
Chlorophyll and d
Chlorophyll d and c
Correct Ans
...
The sequence of electron acceptors in the light reaction is
PQ—cyf f—cyt b—-PC
PQ—PC—Cytb—-Cyt f
PQ—PC—Cyt f—-Cytb
PQ—Cyt b—Cyt f—-PC
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M
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B
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Correct Ans
...
Which of the following is the source of hydrogen in the glucose molecule formed during photosynthesis?
Water
CO2
ATP
NADP
Correct Ans
...
Which of the following are products of light reaction?
NADPH2 and Water
NADPH2 and ATP
ADP and ATP
NADPH2 and Glucose
Correct Ans
...
In the dark reaction, ATP and NADPH2 react with:
RuBP
PGA
PGAL
Glucose
Correct Ans
...
Chlorophyll “a” occurs in all Photosynthetic plants except:
Green algae
Blue green algae
Angiosperms
Pigment containing bacteria
Correct Ans
...
When the fluid outside a cell has a greater concentration of a given molecule than the fluid inside the cell, the external fluid is
isotonic
hypertonic
hypotonic
ultratonic
Correct Ans
...
The osmotic pressure of pure water is:
0
1
10
100
Correct Ans
...
The water potential of all solutions as compared to pure water is always:
higher
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M
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B
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1st Year Biology Solved MCQs (All Punjab Boards)
lower
equal
none of these
Correct Ans
...
The wavelengths of visible light are longer than the wavelengths of
infrared
ultraviolet
microwaves
radio waves
Correct Ans
...
The wavelengths of visible light are shorter than the wavelengths of
infrared
ultraviolet
x-rays
gamma rays
Correct Ans
...
Which of the following colours of light work best for photosynthesis?
Red
Yellow
Blue
Both a and c
Correct Ans
...
Which of the following is the worlds most common protein?
cellulose
ribulose biphosphate carboxylase
insulin
diastase
Correct Ans
...
Photophosphorrylation in a chloroplast is mot similar to which of the following mitochondrial reaction?
substrate-level phosphorylation
oxidative phosphorylation
oxidative decarboxylation
hydrolysis
Correct Ans
...
A photosystem is an assemblage of pigment molecules together ranging from
10 – 100
100 – 200
200 – 400
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M
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B
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400 – 500
Correct Ans
...
The final acceptor of electrons during the light reaction of photosynthesis is:
Cyt
...
B
ATP
NADP
Correct Ans
...
Which of the following is obtained from phosphoglyceraldehyde in the dark reaction of photosynthesis?
phosphoglyceric acid
glucose
carbon dioxide
plastoquinone
Correct Ans
...
Which of the following conditions in a plant cell would increase the uptake of water?
osmotic pressure is higher than the turgor pressure
osmotic pressure is equal to turgor pressure
osmotic pressure is less than the turgor pressure
both a and c
Correct Ans
...
Which of the following would occur when a plant cell is packed in a fluid with high osmotic concentration than the cell sap?
imbibition
Plasmolysis
Deplasmolysis
Diffusion
Correct Ans
...
With the increase of ions in the xylem its water potential becomes
more positive
more negative
zero
neutral
Correct Ans
...
Water potential of a liquid increases when solute concentration
Increases
Decreases
Remains unchanged
None of these
50
...
(b)
Which of the following is not true of the exudation of water?
water drops come out through stomata
water drops come out through hydathodes
water is forced out of the leaves by root pressu
water drops are not formed by dew
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M
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B
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1st Year Biology Solved MCQs (All Punjab Boards)
Correct Ans
...
Water in the xylem vessel will ascend up until
its cohesive and adhesive strength is more than the gravitational pull
gravitational pull is higher then the cohesive and adhesive strength of water
sufficient water is available in the soil
it is used in the photosynthesis
Correct Ans
...
Plants do not store carbohydrates as glucose because it
dissolves in water, thereby altering the osmotic bala
attracts insects herbivores
is an unstable molecule
would replace ribose in DNA synthesis
Correct Ans
...
Which of the following processes is responsible for the entry of water into root hair?
wall pressure
osmotic pressure
turgor pressure
atmospheric pressure
Correct Ans
...
Which of the following forces are responsible for the ascent of water in plant body?
atmospheric pressure
root pressure
transpiration pull
both b and c
55
...
(d)
Of the total sunlight reaching the earth, the percentage used in the photosynthesis is:
2%
20%
30%
50%
Correct Ans
...
Which of the following products of light reaction of photosynthesis is not used in the dark reaction?
ATP
NADPH2
Oxygen
None of these
Correct Ans
...
The empirical formula of chlorophyll a is:
C55 H72 O5 N4 Mg
C55 H70 O5 N3 Mg
C56 H72 O66 N4 Mg
C55 H74 O5 N5 Mg
Correct Ans
...
Sc
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A
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Ed
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1st Year Biology Solved MCQs (All Punjab Boards)
Which of the following is true of chlorophyll?
absorbs all types of waves of sunlight
containing iron atom in the center
containing magnesium atom in the center
present in all cells of green plants
Correct Ans
...
The most effective light absorbed by the chlorophyll is:
yellow
orange
green
none of these
Correct Ans
...
Photosystem I has an absorption spectrum of wavelengths of around
600 nm
650 nm
680 nm
700 nm
Correct Ans
...
Which of the following is not necessary for photosynthesis?
CO2
Chlorophyll
H2O
Oxygen
Correct Ans
...
In photosystem II, the electrons lost by reaction center are replaced by electrons from
H2O
C2 O
Photosystem I
ATP
Correct Ans
...
In animals the product of anaerobic respiration is:
Butyric acid
Alcohol
Glucose
Lactic acid
Correct Ans
...
The process of Glycolysis takes place in:
Mitochondria
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B
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1st Year Biology Solved MCQs (All Punjab Boards)
Cytoplasm
Stroma
Granum
Correct Ans
...
In electron transport chain, one pair of electrons passing from NAD reduced to oxygen produces
4 ATP
3 ATP
2 ATP
1 ATP
Correct Ans
...
From which of the following plants gain weight?
Respiration
Transpiration
Photosynthesis
Fermentation
Correct Ans
...
Cambium is responsible for increase in:
Length
Photosynthesis
Diameter
Transpiration
Correct Ans
...
In which of the following cells elongate parallel to the long axis of the stem or root?
Pith
Trachieds
Cortex
Parenchyma
Correct Ans
...
Spiral thickenings of the walls of cells occur in:
Parenchyma
Chlorenchyma
Xylem vessels
Cortex
Correct Ans
...
The molecule which actually enters the Krebs cycle is:
Pyruvic acid
Acetyl-CoA
Oxao acetic acid
Fumaric acid
Correct Ans
...
In the Krebs cycle oxaloacetic acid reacts with:
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M
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B
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1st Year Biology Solved MCQs (All Punjab Boards)
Pyruvic acid
Citric acid
Acetyl-CoA
Succinic acid
Correct Ans
...
One ATP molecule is generated during the Krebs cycle in the step:
citric acid ———– Alpha Ketoglutatic acid
Alpha Ketoglutatic acid ——- Succinic acid
Succinic acid —————- Fumaric acid
Fumaric acid———– Malic acid
Correct Ans
...
It involves the liberation of Oxygen and absorbtion of CO2
Aerobic respiration
Anaerobic respiration
Photosynthesis
Both A & B
Correct Ans
...
At the end of the electron transport chain during respiration, electrons are accepted by:
NAD
FAD
Oxygen
Hydrogen
Correct Ans
...
During growth fibers elongate greatly:
At right angle to the long axis
Parallel to the long axis
Obliquely to the long axis
In all directions
Correct Ans
...
Which of these is the naturally occurring auxins?
Indole acetic acid
2, 4-D
Abscisic acid
Butyric acid
Correct Ans
...
The application of Auxin in small amount:
Stimulate the growth of leaves
Retard the growth of leaves
Suppress the growth of leaves
Does not affect the growth of laves
Correct Ans
...
Which of these increases the growth rate of isolated cells in a test tube?
Auxins
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M
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B
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1st Year Biology Solved MCQs (All Punjab Boards)
Cytokinins
Gibberellins
None of these
Correct Ans
...
Chrysanthemum indicum is a:
Short day plant
Long day plant
Day neutral plant
Both A & B
Correct Ans
...
Thigmotropism is a growth movement in response to:
sunlight
gravity
water
touch
Correct Ans
...
Which one of the following properties are shared by photosynthesis and aerobic respiration?
CO2 consumption
ATP synthesis
O2 release
Glucose synthesis
Correct Ans
...
The function of cellular respiration is to
make ATP
make NADPH
get rid of glucose
get rid of carbon dioxide
Correct Ans
...
Each chemical reaction in cellular respiration requires
a molecule of ATP
a molecule of FAD
a molecule of NAD
a specific enzyme
Correct Ans
...
The term anaerobic means
with glucose
with oxygen
without glucose
without oxygen
Correct Ans
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Which of the following processes makes direct use of oxygen?
Glycolysis
Fermentation
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M
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B
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1st Year Biology Solved MCQs (All Punjab Boards)
Electron transport chain
Krebs cycle
Correct Ans
...
How many ATP molecules are formed during one turn of Kreb’s cycle?
zero
1
2
3
Correct Ans
...
Glycolysis is a process found in
only eukaryotic cells
only prokaryotic cells
only most muscle cells
virtually all cells
Correct Ans
...
How many molecules of oxygen gas are used during the Glycolysis of one glucose molecule?
non
1
6
38
Correct Ans
...
Phosphoglyceraldehyde is oxidized during Glycolysis
...
(b)
28
...
The phosphate group comes from
inorganic phosphate
phospholipids of the membrane
ADP
ATP
Correct Ans
...
Which of the following is not true of Glycolysis?
substrate level phosphorylation takes place
the end products are carbon dioxide and water
ATP is formed
ATP is used
Correct Ans
...
Which of the following is not formed during alcohol fermentation?
acetyl coenzyme A
Pyruvic acid
Ethanol
Carbon dioxide
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M
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B
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Correct Ans
...
Which of the following is the end product of anaerobic respiration in animals?
ethyl alcohol
lactic acid
carbon dioxide
water
Correct Ans
...
In the conversion of Pyruvic acid to acetyl coenzyme A, Pyruvic acid is:
oxidized
reduced
broken into one carbon fragment
isomerized
Correct Ans
...
At the end of the Krebs cycle, most of the energy removed from the glucose molecule has been transferred to:
NADH2 and FADH2
ATP
Oxaloacetic acid
Citric acid
Correct Ans
...
In the electron transport system, the final acceptor electrons is
cytochrome c
cytochrome a
oxygen
FAD
Correct Ans
...
In aerobic respiration, most of the ATP is synthesized during
Glycolysis
Oxidation of Pyruvic acid
The Krebs cycle
Electron transport
Correct Ans
...
How may ATP molecules are formed inside mitochondria from the breakdown of one glucose molecule?
32 ATP
36 ATP
38 ATP
40 ATP
Correct Ans
...
During electron transport, each molecule of FADH2 produces a maximum of
2 ATP
3 ATP
6 ATP
8 ATP
Correct Ans
...
Sc
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A
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Ed
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1st Year Biology Solved MCQs (All Punjab Boards)
Fatty acids enter cellular respiration as:
one carbon fragment
two carbon fragments
three carbon fragments
long chain carbon
Correct Ans
...
In a eukaryotic cell, the Krebs cycle and electron transport chain take place
on the rough endoplasmic reticulum
in the cytoplasm
with in the nucleus
within the mitochondria
Correct Ans
...
The main advantage of aerobic respiration over anaerobic respiration is that:
less carbon dioxide is released
more energy is released from each glucose molecule
fats and proteins are not used
more carbon dioxide is released
Correct Ans
...
A molecule of ADP differs form a molecule of ATP in that it has
diamine instead of thymine
fever phosphate groups
more phosphate groups
more energy
Correct Ans
...
Shoot apical meristem cells are distinct from other stem cells because of their
small size
enlarged water vacuole
thick cell wall
triploid nuclei
Correct Ans
...
New leaves are formed from the
shoot apical meristem
vascular cambium
lateral buds
pericycle
Correct Ans
...
Most of a plant’s auxin is produced in its
leaves
lateral buds
shoot apex
root apical meristem
Correct Ans
...
Sc
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A
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Ed
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1st Year Biology Solved MCQs (All Punjab Boards)
The main effect of auxin is to stimulate
division
enlargement
differentiation
turgor
Correct Ans
...
Cytokinins stimulate cell
division
enlargemen
wall thickening
turgor
Correct Ans
...
When its terminal bud is moved, plant grows more
tall
bushy
slowly
rapidly
Correct Ans
...
Which of the following delays the normal process of aging in leaves?
auxins
gibberellins
insulin
Cytokinins
Correct Ans
...
Ethylene is an unusual hormone in that it is
a gas
solid
transported by the xylem
transported by the phloem
Correct Ans
...
An important effect of ethylene is to cause maturation of
leaf primordial
flower
fruit
stem
Correct Ans
...
If a short day plant is grown under conditions of long nights and short days and the dark period is interrupted in the middle by
a brief exposure to red light, the plant will
wilt
flower
fail to flower
die
Correct Ans
...
If a long day plant is grown under conditions of long nights and short days and the dark period is interrupted in the middle by
a brief exposure to red light, the plant will
die
flower
fail to flower
wilt
Correct Ans
...
Which of these is not true of fermentation (anaerobic respiration)?
net gain of only 2 ATP
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occurs in the cytoplasm
NADH donates electrons to the electron transport system
Beings with glucose
Correct Ans
...
The transfer of high energy phosphate bonds to ADP by the substrate is called:
oxidative phosphorylation
substrate level phosphorylation
photophosphorylation
carboxylation
Correct Ans
...
Which of the above properties are shared by fermentation, aerobic respiration and photosynthesis?
I-II
I-IV
I-III
III-IV
Correct Ans
...
The asexual production of seeds is called
fragmentation
fertilization
parthenocarpy
apomixes (parthenogenesis)
Correct Ans
...
A hormone that controls closure of stomata in response to water stress is
gibberellins
Abscisic acid
Auxins
Cytokinins
Correct Ans
...
Which of the following cellular organelles extracts energy from carbohydrates and forms ATP molecules?
Lysosome
Chloroplast
Mitochondrion
Chromoplast
Correct Ans
...
The value of respiratory quotient of amino acids is
0
1
more than 1
less than 1
Correct Ans
...
The primary plant body is covered with a layer of cells called
cuticle
epidermis
periderm
ground tissue
Correct Ans
...
Root hairs are formed from extension of the
ground tissue
periderm
epidermis
cuticle
Correct Ans
...
Secondary growth involves activity of the root tips
shoot tip
apical meristem
lateral meristem
Correct Ans
...
The function of root cap is to
produce embryonic cells
protect the root apical meristem from damage
absorb water
absorb minerals
Correct Ans
...
Sc
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A
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Ed
Title: Biology Solved MCQs
Description: Biology Solved MCQs for 1st Year Medical Science Students Short MCQ`s Note: This is a Very Good Book Which Will Increase Your Knowledge a lot after reading it.
Description: Biology Solved MCQs for 1st Year Medical Science Students Short MCQ`s Note: This is a Very Good Book Which Will Increase Your Knowledge a lot after reading it.