NEET 2007 Biology question

If you are asked to classify the various algae into distinct groups, which of the following characters you should choose?

(1)Chemical composition of the cell wall
(2)Types of pigments present in the cellCorrect
(3)Nature of stored food materials in the cell
(4)Structural organization of thallus.

Answer: (2)

Solution

Algae are classified into Chlorophyceae (green; chlorophyll a, b), Phaeophyceae (brown; chlorophyll a, c and fucoxanthin) and Rhodophyceae (red; chlorophyll a, d and phycoerythrin) mainly on the basis of the kinds of photosynthetic pigments they contain,

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Question ID VK-089748