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Question

This class of algae has its cell wall made up of cellulose and algin, with chlorophyll a, c and fucoxanthin as its pigments. The reserve food is mannitol and laminarin. Identify the class.

A
Chlorophyceae
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B
Phaeophyceae
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C
Rhodophyceae
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D
Cyanophyceae
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Solution

The correct option is B Phaeophyceae
The brown algae belong to the class Phaeophyceae and they are characterised by:
i) Presence of chlorophyll a, c and fucoxanthin as major pigments
ii) Reserve food material is mannitol and laminarin.
iii) Cell wall has cellulose and algin.

Cyanobacteria belong to the class Cyanophyceae.

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