Question

If a live earthworm is pricked with a needle on its outer surface damaging its gut, which of the following fluid comes out?

• A. Excretory fluid
• B. Coelomic fluid
• C. Haemolymph
• D. Slimy mucus

Answer 1

Answer: (B)

Coelomic fluid

Coelom or perivisceral cavity is the space between alimentary canal and body wall filled with coelomic fluid.Coelomic fluid oozes out through dorsal pores. The dorsal blood vessel is situated above the gut and is often visible externally through the skin as a dark line down the back of the worm. Inside the worm is the tubular gut which occupies the central fluid-filled cavity or coelom.

So, the correct answer is option B.