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Title: phylum protozoa
Description: Detailed classification about phylum protozoa is given in the notes. its description and salient features are discussed
Description: Detailed classification about phylum protozoa is given in the notes. its description and salient features are discussed
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Table of contents
Brief History
Salient Features
Classification of Protozoa
Class 1
...
Rhizopoda
Class 3
...
Sporozoa
Brief History
One celled body performs all the biological activities like multicellular animals
...
Protozoans were first studied by Leeuwenhoek
...
The branch of study of protozons is known as Protozoology
...
(3) They are free living or parasitic
...
(5) In few groups of protozoa CaCO3 & Silica shell's exoskeleton
is found
...
(6) Number of nuclei varies from one to many
...
Example: Paramoecium
...
(8) All the free living forms are aquatic
...
(10) They are unicellular (acellular)
...
(12) Locomotion is by means of(a) Finger-like Pseudopodia e
...
Amoeba
(b) Whip like Flagella e
...
Euglena
(c) Hairy cillia e
...
Paramoecium
(d) By contraction
(e) No motion (plasmodium)
(13) Nutrition of Protozoans are mainly holozoic (Amoeba), Mixotrophic
...
(14) Digestion is intracellular
(15) Respiration and Excretion take place by exchange of gases through body surface
...
Nitrogenous waste is Ammonia
...
(16) In fresh water protozoans osmoregulation is carried out by the contractile vacuoles
...
Reproduction takes place by
Asexual:
(a) Binary fission (Amoeba)
(b) Transverse fission (Paramoecium)
(c) Longitudinal fission (Trypansoma, Euglena)
(d) Multiple fission (Plasmodium)
(e) Budding
Amoeba
Sexual:
(a) Syngamy (Plasmodium), Conjugation (Paramoecium) also form cyst which help in unfavourable condition
for reproduction of organism
...
Classification of Protozoa
Class 1
...
(2) The locomotory organs are flagella
...
(4) Chloroplasts are found in some forms
...
(6)The class flagellata has been divided into eight orders
...
Class 2
...
(5) The contractile vacuoles are present in the fresh water forms
...
coli etc
...
Ciliophora
(1) The body is covered by thin pellicle
(2) They have a fixed permanent shape
(3) The locomotory organs are cilia
(4) Tentacles are present
(5) The class ciliophora is divided into two sub-classes, namely Ciliata and Suctoria
...
Ciliata
(1) Cilia are present throughout life
...
Cytopyge is a temporary anal aperture
...
(5) Trichocysts, organs of offense and defence are present in certain forms
...
, Paramecium is filter feeder
...
Suctoria
(1) Cilia are present only in the young conditions and adults are devoid of them
...
,
Class 4
...
(3) Reproduction takes place by spore formation
(4) The class is divided into two sub-classes, namely, Telosporidia and Neosporidia
Sub-class 1
...
(3) The spore cases are simple and contain many spores
(4) Examples: Monocystis, Gregarina, Isopora, Eimeria, Plasmodium,
Babesia, etc
...
Neosporidia
(1) The trophozoite is amoeboid multinucleated
(2) Spore cases are complex usually having a single germ
(3) Examples: Nosema, Myxidium, Globidium, etc
Title: phylum protozoa
Description: Detailed classification about phylum protozoa is given in the notes. its description and salient features are discussed
Description: Detailed classification about phylum protozoa is given in the notes. its description and salient features are discussed