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Food production and microbes - class-XI

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Multiple Choice

____ and ____ are unicellular algae, rich in proteins, that are used as food supplements even by space travellers. 

  1. Chlorella, Spirulina
  2. Gelidium, Gracilaria
  3. Porphyra, Spirogyra
  4. Laminaria, Spirogyra
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