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Chordata/Vertebrata

Changes in th...

Question

Changes in the body form of some planktonic animals with seasonal changes in temperature are called:

A

Anamorphosis

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B

Cyclomorphosis

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C

Metamorphosis

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D

Heteromorphosis

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Solution

The correct option is B
Cyclomorphosis

Cyclic recurrent polymorphism in certain planktonic fauna in response to seasonal temperature or salinity changes is said to be cyclomorphosis.

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Q. Assertion – Daphnia populations in a water body at different seasons of an year showed marked variations in their body morphology
Reason – Cyclomorphosis in some planktonic organisms is influenced by the variations in temperatures prevailing in their water bodies at different seasons

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