What are the similarities and differences in the external structure of the male and female human roundworm?

The human roundworm is a parasitic worm of the Roundworm type. Unlike flatworms, which are hermaphrodites, roundworms are dioecious. Females and males of roundworms have a white, fusiform body, round in cross section. They have no sense organs and special organs for locomotion and attachment. The female is larger than the male, it can be 20 to 40 cm long, while the male reaches a length of 15 cm. They can be distinguished not only by size – in the male, the rear end of the body is twisted.