Question

A research scholar once collected certain alga and found that its cells contained chlorophyll-$a$, chlorophyll-$d$ and phycoerythrin. The alga must belong to

• A. Chlorophyceae
• B. Rhodophyceae
• C. Bacillariophyceae
• D. Cyanophyceae

Answer 1

Answer: (B)

Rhodophyceae

Answer 2

Members of Rhodophyceae (red algae) contain chlorophyll-$a, d, r$ -phycoerythrin, rphycocyanin $\alpha$ and $\beta$-carotene pigments. So, it belongs to this group. Members of Chlorophyceae (green algae) contain chlorophyll- $a, c, \beta$-carotene pigments. Members of Bacillariophyceae (diatoms) contain chlorophyll- $a, c, \beta$-carotene, ecarotene pigments. Members of Cyanophyceae (cyanobacteria, blue-green algae) contain chlorophyll-$a, c$-phycocyanin, $c$-phycoerythrin, $\beta$-carotene pigments.