Assertion (A) : The fertilisation in earthworm is external.Reason (R) : Fertilisation occurs in the cocoon secreted by prostate glands.
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a
Both (A) and (R) are true and (R) supports (A).
b
Both (A) and (R) are true but (R) does not support (A).
c
(A) is true but (R) is false.
d
Both (A) and (R) are false.
answer is C.
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Detailed Solution
Fertilisation occurs within the cocoons which are deposited in soil (not within the body of earthworm) and hence, it is external fertilisation.The cocoons are secreted by the gland cells of the clitellum.