Which of the following are the characters of dinoflagellates?
(i) They are planktonic golden yellow algae with soap box like structure.
(ii) They are marine red biflagellated protista.
(iii) They appear yellow, green, brown, blue and red in colour.
(iv) They are biflagellated organisms with pellicle.
(v) They are saprophytic (or) parasitic unicellular forms.
Text Solution
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Dinoflagellates are a diverse group of mostly marine, photosynthetic protists. The statements that correctly describe their characteristics are:
(ii) They are marine red biflagellated protista: Most dinoflagellates are marine and possess two flagella. Some species, such as Gonyaulax, can multiply rapidly and cause "red tides," making the sea appear red.
(iii) They appear yellow, green, brown, blue and red in colour: Their color depends on the specific pigments present in their cells (e.g., chlorophyll a, c, and carotenoids).
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