CLASSIFICATION OF CHLAMYDOMONAS
PHYLUM :- PROTOZOA (Unicellular)
SUB-PHYLUM :- PLASMODROMA (Cilia absent, locomotion by pseudopodia)
CLASS :- MASTIGOPHORA (One or more flagella)
SUB-CLASS :- PHYTOMASTIGINA (Chromatophores present)
ORDER :- CHLAMYDOMONADALES (Longer forms with one or more flagella)
FAMILY :- CHLAMYDOMONADACEA
GENUS :- Chlamydomonas
GEOGRAPHICAL DISTRIBUTION
It is found everywhere. Cosmopolitan.
HABIT AND HABITAT
Chlamydomonas is a solitary and typical representative of phytomonadina, commonly found in stagnant freshwater. Their number sometimes so becomes abundant that entire water looks green
GENERAL CHARACTERSTICS OF CHLAMYDOMONAS
- Body of the animal is green coloured and usually with a delicate cellulose capsule.
- Body may be oval, flattened or cylindrical and composed of closely-fitted, thick, delicate and transparent cell wall made up of cellulose.
- It swims rapidly by 2 whip-like flagella, each originating separately from blepharoplast.
- Body is green due to the presence of chlorophyll in a cup-shaped chloroplast. A pyrenoid is embedded in the basal part of the chloroplast. Endoplasm contains reserve food granules.
- A reddish pigment or stigma lies anteriorly, while 2 contractile vacuoles are found near the base of flagella.
- Nutrition is plant-like or holophytic, i.e., they manufacture their own food, saprozoic or mixotrophic.
- It reproduces asexually by binary fission and sexually by the fusion of flagellate isogametes.
SPECIAL FEATURES
C. pulvisculus gives oily flavour in the water.
IDENTIFICATION
It contains cup-shaped chloroplast and all above features, hence it is Chlamydomonas.
References
- https://depositphotos.com/stock-photos/chlamydomonas.html
- https://en.wikipedia.org/wiki/Chlamydomonas
- https://www.amazon.in/Practical-Zoology-Invertebrate-S-Lal/
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