Question 4 of 11intermediate🧠 RememberMatching4 marks

Match the following: (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

Correct Answer

(a) viii

(b) v

(c) iv

(d) i

(e) ii

(f) vii

(g) iii

(h) vi

Exercise: EXERCISES | Q: 14 | (Chapter: 18)
For More Understanding

Explanation

This matching question tests distinctive features of different animal groups. From the context: Ctenophora has 'Comb plates for locomotion' (d-i), and Cyclostomata has '6-15 pairs of gill slits for respiration' (h-vi). The other matches follow standard classification: Operculum is the gill cover in bony fishes Osteichthyes, Parapodia are locomotory appendages in Annelida, Scales characterize Reptilia, Radula is the rasping organ in Mollusca, Hairs are exclusive to Mammalia, and Choanocytes (collar cells) are found in Porifera.

Solution Steps

  1. Step 1: Match (d) Comb plates with (i) Ctenophora - explicitly stated in context table: 'Comb plates for locomotion'

  2. Step 2: Match (h) Gill slits with (vi) Cyclostomata and Chondrichthyes - context states Cyclostomata has '6-15 pairs of gill slits'

  3. Step 3: Match (g) Choanocytes with (iii) Porifera - Porifera has 'Body with pores and canals' with choanocytes creating water flow

  4. Step 4: Match remaining pairs based on phylum/class characteristics: Operculum-Osteichthyes, Parapodia-Annelida, Scales-Reptilia, Radula-Mollusca, Hairs-Mammalia

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