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Match List-I with List-II. List-I List-II (A) Choanocytes (I) Ctenophora - Locomotion (B) Comb plates (II) Platyhelminthes - Osmoregulation and excretion (C) Flame cells (III) Porifera - Line the spongocoel and canals (D) Radula (IV) Mollusca - Feeding Choose the correct answer from the options given below.

Options

  1. A(A)-(III), (B)-(IV), (C)-(II), (D)-(I)
  2. B(A)-(II), (B)-(I), (C)-(III), (D)-(IV)
  3. C(A)-(III), (B)-(II), (C)-(I), (D)-(IV)
  4. D(A)-(III), (B)-(I), (C)-(II), (D)-(IV)

Correct answer

D. (A)-(III), (B)-(I), (C)-(II), (D)-(IV)

Step-by-step solution

(A) Choanocytes (collar cells) line the spongocoel and the canals in members of Phylum Porifera. (B) Comb plates are eight external rows of ciliated structures present in Ctenophores, which help in locomotion. (C) Flame cells are specialized cells in Platyhelminthes (flatworms) that help in osmoregulation and excretion. (D) Radula is a file-like rasping organ present in the mouth of Molluscs, used for feeding. Therefore, the correct matching is (A)-(III), (B)-(I), (C)-(II), and (D)-(IV). Answer: (A)-(III), (B)-(I),

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