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Q.

Mark the correct description of operculum.

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a

Type of caudal fin in bony fishes

b

Gill cover in bony fishes

c

Copulatory structure in cartilaginous fishes

d

Type of scale in cartilaginous fishes

answer is B.

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Detailed Solution

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  • Operculum is a lid-like structure which covers gills in the bony fishes.
  • Claspers are the copulatory structures in male sharks (cartilaginous fishes).
  • Placoid scales are the pointed scales that cover the body of cartilaginous fishes.
  • Caudal fin in bony fishes is homocercal (equally divided lobes).
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Mark the correct description of operculum.