In Pheretima, which of the the following structures are absent in the segments with typhlosolar region of intestine?

Prostate glands are not present in the typhlosolar region.

An internal median fold of dorsal wall called typhlosole is present in the intestine after 26^th segment (except the last 23^rd-25^th segments). One pair of prostate glands present in earthworms. It extends from 16^th to 20^th segments or from 17^th to 21^st segments. It produces prostatic fluid that is alkaline in nature. The prostatic fluid activates sperms and keeps them motile. Typlosolar region