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Question

Cyst is produced in Amoeba during

A
Adverse conditions
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B
Sexual reproduction
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C
Prior to sexual reproduction
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D
After sexual reproduction
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Solution

The correct option is A Adverse conditions
  • During adverse environmental periods many amoebas survive by encystment, the amoeba becomes circular, loses most of its water, and secretes a cyst membrane that serves as a protective covering.
  • When the environment is again suitable, the envelope ruptures, and the amoeba emerges.
So the correct answer is option A.

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