Chlamydomonas


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Fig. 99 Chlamydomonas . Generalized structure.

Chlamydomonas

a flagellate, unicellular green alga now normally placed in the division CHLOROPHYTA but in many (older) texts regarded as a protozoan and placed in the class MASTIGOPHORA. It is characterized by the presence of two flagella (see FLAGELLUM and, because of the presence of CHROMATOPHORES (1), is referred to as a phytoflagellate (often given subclass status: Phytoflagellata). Reproduction is by repeated fission or varies between species from an asexual method to a sexual method of CONJUGATION where ISOGAMETES rather than differentiated male and female gametes are produced.