Question

i) Members
contain
of Rhodophyceae​

Answer 1

The members of Rhodophyceae are known as red algae because they contain a red pigment known as phycoerythrin which give them red colour

Answer 2

Explanation:

The members of Rhodophyceae are commonly called red algae because of the predominance of the red pigment r _ phycoerythin in their body .