Question

In Pheretima, septa are absent between which segments?

• A. $3/4$ and $9/10$
• B. $4/5$ and $8/9$
• C. $5/6$ and $7/8$
• D. $7/8$ and $6/7$

Answer 1

The correct option is A $3/4$ and $9/10$

The coelom in the earthworm is not continuous cavity but is divided into compartments by transverse circular partition, the septa. The coelom of first four segment is continuous or undivided. Septa is also absent in 9/10 segment.