Exercise · Q22
Q.Match the following. Phylum: i. Annelida, ii. Mollusca, iii. Ctenophora, iv. Porifera, v. Echinodermata. Characters: a. Tube feet, b. Ostia, c. Radula, d. Parapodia, e. Comb plates
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Start your 14-day free trial to unlock the full solution →Step 1. Annelida (i) is characterised by segmented, muscular projections used in locomotion — 'Parapodia' (d) — as seen in Nereis.
Step 2. Mollusca (ii) possesses a rasping, tooth-bearing feeding organ in the buccal cavity called the 'Radula' (c).
Step 3. Ctenophora (iii) moves using eight rows of ciliated plates called 'Comb plates' (e), which also give the group its common name, comb jellies.
Step 4. Porifera (iv) takes in water through numerous minute body pores called 'Ostia' (b). …
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