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.

a. Wrong statement.

Explanation: The given statement is incorrect. In earthworms, there is presence of a pair of male genital pore.

b. Correct statement.

Explanation: The earthworm uses the setae which anchors the front of its body and helps in the locomotion of the earthworm.

c. Wrong statement.

Explanation: The muscular layer in the body wall of the earthworm is not only made up of circular muscles but it also has longitudinal muscles. These muscles are integrated together in the earthworms for its locomotion and survival.

d. Correct statement.

Explanation: Typhlosole is a dorsal flap of the intestine in a earthworm. It runs from the 25^th to 27^th segment of the earthworm’s body.