Plz solve questions 2

Dear student 
2. 
(a) Chrysophytes are mostly photosynthetic with cell walls in 2 halves having silica. 
(b) Dianoflagellates  appear yellow, green, brown, blue or red; according to the pigment present in them. Most of them have two flagella. One flagellum lies longitudinally and another transversely in a furrow between the wall plates.
Regards 

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