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Title: Control and Coordination in Plants
Description: This questions and answer contain very interesting and challenging questions for every harworking TOPPER students
Description: This questions and answer contain very interesting and challenging questions for every harworking TOPPER students
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Control & Coordination in Plants
1
...
The universal natural auxin of plans is:
(A) IBA
(B) Citric auxin
(C) NAA
(D) IAA(ans)
3
...
Apical dominance is:
(A) Suppression of growth of apical bud by nearby lateral axillary buds
(B) Stimulation of growth of apical bud by removal of apical bud
(C)Suppression of growth of lateral axillary buds by removal of apical bud
(D) Suppression of growth of nearby lateral axillary buds by apical
bud (ans)
5
...
Hormone primarily connected with cell division is:
(A) IAA
(B) NAA
(C) Cytokinin/zeatin (ans)
(D) Gibberellic acid
7
...
The hormones which regulate phloem transport are:
(A) Auxins
...
Abscisic acid controls/promotes:
(A) Cell division
(B) Shoot clongation
(C) Leaf fall senescence and dormancy (ans)
(D) Cell elongation and wall formation
10
...
Hormone involved in inhibition of growth is:
(A) ABA (ans)
(B) Ethylene
(C) None of the above
(D) Both A & B
12
...
Pineapple can be made to flower with the help of:
(A) Kinetin
(B) Ethylene
(C) GA
(D) Exposure to low temperature (ans)
14
...
It will not be acid causes senescence and abscission of leaves due to
deposition of abscissic layer
...
Delay in senescence is due to:
(A) Gibberellin
(B) Auxin
(C) Cytokinin (ans)
(D) Ethylene
17
...
Bakanae disease is caused by:
(A) Fungus (ans)
(B) Alga
(C) Bacterium
(D) Virus
19
...
Short day plants flower:
(A) When night exceeds a critical photoperiod (ans)
(B) When dark period is interrupted by flash of light
(C) When the night length is shorter than critical period
(D) When the night length is shorter than a critical dark period but the day
length is interrupted with a short dark period
...
Which of the following movements in plants is not related to changes in
auxin levels?
(A) Nastic movement (ans)
(B) Movement of roots towards soil
(C) Movements of sunflower to tracking the direction of sun
(D) Movements of shoot towards light
22
...
The main effect of cytokinins in plants it to:
(A) Increase the length of internodes on flowering stems
(B) Prevent the growth of lateral buds
(C) Regulate opening and closing of stomata
(D) Stimulate cell division (ans)
24
...
Match the plant hormones listed in column-I with their major role listed
in column-II and mark your answer from codes given below the list:
COLUMN-I
A
...
Cytokinins
C
...
Ethylene
COLUMN-II
1 Fruit ripening
2 Phototropism
3 Cell division
4 Stomatal opening and closing
5 Growth of lateral buds
(A) A-5, B-3, C-4, D-2
(B) A-2, B-5, C-4, D-3
(C) A-3, B-2, C-4, D-1
(D)A-2, B-3, C-4, D-1 (ans)
26
...
27
...
28
...
29
...
Chemically hormones are:
(a) Steroids only
(b) Proteins only
(c) biogenic amines only
(d) Proteins, steroids and biogenic amines (ans)
Title: Control and Coordination in Plants
Description: This questions and answer contain very interesting and challenging questions for every harworking TOPPER students
Description: This questions and answer contain very interesting and challenging questions for every harworking TOPPER students