Home Biology Biological Classification Kingdom–Plantae, Animalia and Algae Which of the following plant groups have sim…
Biology Biological Classification Kingdom–Plantae, Animalia and Algae Single Correct MCQ
Published on: August 13, 2026

Which of the following plant groups have similar pigment composition?

A
Rhodophyta and phaeophyta
B
Chlorophyta and phaeophyta
C
Rhodophyta and cyanophyta
D
All of the above

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Verified by Experts
The correct answer is:
C

Rhodophyta (red algae) and Cyanophyta (blue-green algae or cyanobacteria) share a unique pigment composition characterized by the presence of phycobilins, which are water-soluble accessory pigments. Both groups possess:

Chlorophyll a: The primary photosynthetic pigment.

Phycobiliproteins: Specifically phycoerythrin (red pigment) and phycocyanin (blue pigment).

Carotenoids: Including - carotene and zeaxanthin.

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