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Identify the organisms whose members have cell wall made of stiff cellulosic plates on the outer surface and causes red tide .

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Dinoflagellates

Euglenoids

Diatoms

Desmids

answer is C.

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Detailed Solution

The cell wall of dinoflagellate has stiff cellulose plates on the outer surface. Very often, red dinoflagellates (Example: Gonyaulax) undergo such rapid multiplication that they make the sea appear red (red tides).

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