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Microorganisms are

  • A.Unicellular
  • B.Multi-cellular
  • C.Both
  • D.None of these

Answer: B

Correct answer: Both

Microorganisms are simply organisms too small to see with the naked eye, and that includes both kinds. Most - bacteria, protozoa, yeasts - are unicellular, but many moulds and algae are multicellular, with filaments of many cells. Size, not cell number, is what defines the category.

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