Match List-I with List-II. List-I: (a) Metamerism (b) Canal system (c) Comb plates (d) Cnidoblasts. List-II: (i) Coelenterata (ii) Ctenophora (iii) Annelida (iv) Porifera
(a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)
(a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
(a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
(a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
Metamerism is commonly seen in the members of phylum Annelida where the body is externally and internally divided into segments with a serial repetition of atleast some organs. Water canal system is present in the members of phylum Porifera. The body of ctenophores bears 8 external rows of ciliated comb plates which help in locomotion. Cnidoblasts or cnidocytes are characteristic feature of cnidarians (coelenterata).
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