Sets of reproductive terms are given below. Choose the set that

has an incorrect combination.

In option (c), sperm is a male gamete, a part of male reproductive system, whereas the other three terms are related to the female reproductive system. As there is a mismatch, this option is an incorrect combination.

In option (a), all four terms are related to male reproductive system, and in option (b) and (d), all four terms are related to female reproductive system. As there is no mismatch, these options are correct combinations.