If a live earthworm is pricked with a needle on its outer surface without damaging its gut, the fluid that comes out is
(1) slimy mucus
(2) excretory fluid
(3) coelomic fluid
(4) haemolymph
Body cavity of earthworm is a true coelom which is filled with an alkaline colorless coelomic fluid.
Hence, the correct option is (3).
