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Question

Glowing of sea water at night is because of

A
Cyclotella
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B
Gonyalaux
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C
Noctiluca
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D
Triceratium
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Solution

The correct options are
B Gonyalaux
C Noctiluca
Dinoflagellates have a property of being luminescent. The dinoflagellates most commonly found in glowing surface water include Noctiluca, Pyrocystis, Peridium, Gonyaulax and Gymnodinium.
Gonyaulax is also responsible for causing certain red tides. Thus, these creatures cause a red tint by day and a bluish-green glow by night.
Thus, the correct answer is options B and C.

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