Protistans tide over long unfavourable periods by forming
A
Hypnospores
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B
Aplanospore
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C
Cysts
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D
None of the above
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Solution
The correct option is C Cysts Protists survive inhospitable conditions (lack of oxygen, extreme temperature) by forming cysts. A cyst is a dormant form of a cell with a resistant outer covering, in which cell metabolism is more or less completely shut down.