Brown algae are coloured by which characteristic pigment?
AFucoxanthin in the chloroplasts
BPhycoerythrin in the cytoplasm
CCarrageen in the cell wall layer
DChlorophyll b in the lamellae
Answer & Solution
Correct answer: A. Fucoxanthin in the chloroplasts
Phaeophyceae are coloured olive-green to brown because of fucoxanthin (a xanthophyll). Phycoerythrin colours red algae; chlorophyll b is in green algae; carrageen is a brown-algal hydrocolloid, not a pigment.
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