Correct Answer - D
Male Ascaris is differentiable from female Ascaris tail end of male Ascaris is charaterized by the presence of numerous genital papillae on ventral surface. There are 50 Pairs of preanal papillae in front of cloaca and 5 pairs of postanal papillae behind it sometimes two chitinous spiculate process of equal size are seen protruding out of the cloacal aperture THese are called peneal setae or spicules which serve to tranfer sperms into female vagina during copulation.
