In the vast marine ecosystem, certain sea develop red col-
ouration. This red colour is due to the presence of large
population of which one of the following organisms?
[2009]
a.)Trichodesmium erythraeum
(B) Physarium
(C) Dinoflagellates
(D) Diatoms and members of red algae
i know that the ans is trichodesmium ,,,
anybody explain y it is not gonyaulax ?
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Answer:
trichodesmium erythraeum causes red sea, while gonyaulax causes red tides