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Which one of the following statements is...

Which one of the following statements is wrong?
1. Agar-agar is obtained from Gelidium and Gracilaria
2. Chlorella and Spirullina are used as space food
3. Mannitol is stored food in Rhodophyceae
4. Algin and carrageenan are products of algae.

A

Agar -agar is obtained from Gelidium and Gracilaria

B

Chlorella and Spirulina are used as space food

C

Mannitol is stored food in Rhodophyceae

D

Algin and carrageen are products of algae

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