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Algal blooms impart a distinct colour to...

Algal blooms impart a distinct colour to water due to :  
(A) their pigments
(B) excretion of coloured substances
(C) formation of coloured chemicals in water facilitated by physiological degradation of algae.
(D) absorption of light by algal cell wall.

A

Their pigments

B

Excretion of coloured substance

C

Formation of coloured chemicals in water facilitated by physiological degradation of algae

D

Absorption of light by algal cell wall.

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The correct Answer is:
A
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