Question

In Pheretima, septa are absent in segments of

• A. 5/6, 10/11
• B. 5/6, 7/8
• C. 6/7, 7/8
• D. First four segments

Answer 1

Answer: (D)

First four segments

The body cavity of an earthworm is a true coelom, which lies between the body wall and the alimentary canal. It is lined by the coelomic epithelium derived from the mesoderm. The septa are absent in the first four segments. So, the correct answer is option D.