If a live earthworm is pricked with a needle on it outer surface without damaging its gut, the fluid that comes out is:
Coelom of earthworm -
The earthworm has schizocoem type. The coelom of the 1st four segments is continuous or undivided.
From 4th and 5th segment, the coelom is divided by septa.
The body cavity of an earthworm is true coelom (schizocoelous) as it is formed by the division of mesoderm. The coelomic fluid contains different types of corpuscles. Thus, if the alive earthworm is prickled with a needle on its outer surface, the coelomic fluid will come out.