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Which one of the following statements is wrong?

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Algin and carrageen are products of algae
Agar – agar is obtained from Gelidium and Gracilaria           
Chlorella and Spirulina are used as space food
Mannitol is stored food in rhodophyceae

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detailed solution

Correct option is D

In rhodophyceae stored food reserve is Floridian starch  In Phaeophyceae Mannitol is reserve food material. 

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