Provide appropriate technical term in the space provided.
(a) Blood-filled cavity in arthropods _____.
(b) Free-floating form of cnidaria _____.
(c) Stinging organ of jelly fishes _____.
(d) Lateral appendages in aquatic annelids _____.
Ans. (a) Haemocoel
(b) Medusa
(c) Nematocytes
(d) Parapodia
