NEET BIOLOGY

Detailed explanation-1: -But, not all algae is green. Some algae have pigments that mask the green chlorophyll. Algae exhibits different color variations because of the other photosynthetic pigments they contain. The major algae divisions can, for the most part, be drawn based on the algae’s predominant apparent color.

Detailed explanation-2: -They get their green color due to the dominance of pigments chlorophyll a and b. Chlorophyceae are unicellular, colonial, or filamentous. They have a rigid cell wall whose inner layer is made up of cellulose and the outer layer of pectose.

Detailed explanation-3: -So, the correct option is ‘Fucus’

Detailed explanation-4: -Besides chlorophyll, they contain blue or red pigments. Although lakes with large numbers of blue-green algae usually appear blue-green in color, the combination of pigments can cause some blooms to appear reddish, brownish, purple, tan, white, or even black.