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Comment upon the gametic exchange in earthworm during mating.
Answers (1)
Answer-
The gametic exchange in earthworms during mating is discussed below.
-Earthworms possess sexes in an individual. Therefore, they are known as hermaphrodite animals.
- The ventrolateral side 18th segment has a pair of tale genital pores.
- Moreover, the 6th and 9th segment have four pair of spermathecae
- The spermatozoa get deposited in the spermathecae during the process of copulation.
- Mating occurs between two earthworm bodies. The bodies get juxtaposed so that the male genital pore of one earthworm is in the opposite direction to the spermathecae of the other earthworm.
- The exchange of spermatozoa occurs between two earthworms in the form of pockets called spermatophores.
- The mature egg cell and the sperm get deposited in the cocoons which are made by the fluid secreted by the clitellum gland
- The cocoons are then deposited in the ground, and further fertilisation occurs.
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