A) chl. a and b present
B) they remain attached
C) chl a and c present
D) presence of fucoxanthin
Correct Answer: A
Solution :
Chlorophyll-b is absent in brown algae. The colour of brown algae varies from olive green through light pigment fucoxanthin\[({{C}_{40}}{{H}_{54}}{{O}_{6}})\] in their chromatophores. This contain inaddition to chlorophyll-a chlorophyllc, carotene and xanthophylls. They grow as lithophytes attached by holdfasts to the rocks, stones or timbers beneath the surface.
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