Members of the chrysophytes (1) Are macroscopic planktons
(2) Are present in fresh water as well as in marine water
(3) Have stiff cellulose plates on the outer surface (4) Cause PSP in human beings

Dear student, Most of the crysophytes are present in fresh water but some are also present in marine water.So the correct answer is 2) are present in fresh as well as marine water. Regards

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