Which of the following algae is used as food supplement even by space travellers?

Gracilaria

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Chlorella

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Both a and c

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Spirullina

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Solution

The correct option is C Both a and c
Chlorella and Spirullina are unicellular algae, rich in protein and are used as food supplement even by space travellers.

Agar extracted from Gracilaria are used to grow microbes and in the preparation of ice-cream and jellies.

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