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

Options

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

Answer

d

Explanation

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 isogemetes. Sexual reproduction which involves the fusion of isogametes is termed isogamous it is a primitive type of sexual reproduction.