Question

Match the following structures in earthworms to their location.
$\begin{array}{cccc}& \text{Structure}& & \text{Location}\\ \text{A.}& \text{Male genital pore}& \text{I}& \text{10th and 11th segment}\\ \text{B.}& \text{Female genital pore}& \text{II}& \text{14th segment}\\ \text{C.}& \text{Testes}& \text{III}& \text{18th segment}\\ \text{D.}& \text{Ovaries}& \text{IV}& \text{12th - 13th inter-segmental septum}\end{array}$

• A. A-I, B-IV, C-II, D-III
• B. A-III, B-I, C-II, D-IV
• C. A-II, B-III, C-IV, D-I
• D. A-III, B-II, C-I, D-IV

Answer 1

The correct option is D A-III, B-II, C-I, D-IV

A pair of male genital pores are present on the ventro-lateral side of the 18th segment. Sperms are released through these pores.
A single female genital pore is present on the ventral side of the 14th segment. Ova is released through this pore.
Two pairs of testes are located in the 10th and 11th segments of earthworm. It is the male gonad that produces spermatozoa.
A pair of ovaries is present attached to the inter-segmental septum of the 12th and 13th segments. It is the female gonad that produces ovum.