Which of the following scales belong to bony fish?

A tand C of bony fish

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A, B and D of bony fish

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B and D of bony fish

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B and C of bony fish

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Solution

The correct option is D
B and C of bony fish

Most bony fishes possess cycloid or ctenoid scales. Both are made up of calcium salt at the upper surface and an inner layer is made up of connective fibers like collagen. Placoid scales are absent in bony fishes.

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