Correct the wrong statements among the following :
(a) In earthworm, a single male genital pore is present.
(b) Setae help in locomotion of earthworm.
(c) Muscular layer in the body wall of earthworm is made up of only circular muscles.
(d) Typhlosole is the part of intestine of earthworm.

Explanation

(b) and (d) are correct statements from the given statements. Correct statement for ‘a’ : The earthworm has one pair of male genital pore on ventrolateral side of `18^(th)` segment.
Male genital fluid possessing sperm cells is released by these pores. Hence ventral mid surface of earthworm has a female genital pore in `14^(th)` segment. Correct statement for ‘c’ : In muscle layer of earthworm outer layer is made up of circular m uscles and internal layer is m ade up of longitudinal muscles.