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Question

Assertion :Isogamy is a primitive type of sexual reproduction. Reason: The gametes are of different sizes.

A
If both the assertion and the reason are true and the reason is a correct explanation of the assertion
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B
If both the assertion and reason are true but the reason is not a correct explanation of the assertion
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C
If the assertion is true but the reason is false
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D
If both the assertion and reason are false
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Solution

The correct option is C If the assertion is true but the reason is false
The fusing gametes in the lower forms of algae are alike in size, structure and behaviour. They are indistinguishable as to sex. Such gametes are called the misogamies. Sexual reproduction which involves the fusion of misogamies is termed isogamous. It is a primitive type of sexual reproduction.

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