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Question

Physiological polyspermy is a characteristic of

A
Birds
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B
Insects
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C
Reptiles
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D
All of the above
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Solution

The correct option is D All of the above
Physiological polyspermy is a type of fertilization in which ovum is fertilized by many spermatozoa. It is a characteristic of several group of animals with internal insemination. In such animals, the number of spermatozoa penetrating the ova varies from 2 - 12 in insects or several dozens in chordate group. Its is shown by spiders, insects, fishes of class chondricythes, amphibians of group caudata, reptiles and birds. Hence, option D that is all of the above is correct.

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