NEET 2021 Biology question
Match List - I with List - II. Choose the correct answer from the options given below. List-I: (a) Metamerism (b) Water canal system (c) Comb plates (d) Cnidoblasts List-II: (i) Coelenterata (Cnidaria) (ii) Ctenophora (iii) Annelida (iv) Porifera
Answer: (C)