The answers of the following are: (a) Operculum – (viii) Osteichthyes (b) Parapodia – (v) Annelida (c) Scales – (iv) Reptilia (d) Comb plates – (i) Ctenophora (e) Radula – (ii) Mollusca (f) Hairs – (vii) Mammalia (g) Choanocytes – (iii) Porifera (h) Gill slits – (vi) Cyclostomata and Chondrichthyes

Match the following: (a) Operculum (b) Parapodia (c) Scales (d) Comb plates (e) Radula (f) Hairs (g) Choanocytes (h) Gill slits?

Column I	Column II
(a) Operculum	(i) Ctenophora
(b) Parapodia	(ii) Mollusca
(c) Scales	(iii) Porifera
(d) Comb plates	(iv) Reptilia
(e) Radula	(v) Annelida
(f) Hairs	(vi) Cyclostomata and Chondrichthyes
(g) Choanocytes	(vii) Mammalia
(h) Gill slits	(viii) Osteichthyes

Column A	Column B
(a) Operculum	(viii) Osteichthyes
(b) Parapodia	(v) Annelida
(c) Scales	(iv) Reptilia
(d) Comb plates	(i) Ctenophora
(e) Radula	(ii) Mollusca
(f) Hairs	(vii) Mammalia
(g) Choanocytes	(iii) Porifera
(h) Gill slits	(vi) Cyclostomata and Chondrichthyes