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Q.

Which of the following fishes have gill slits?

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a

Chimaeras

b

Sharks

c

Salmons

d

Sardine

answer is B.

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Detailed Solution

  • Sharks are cartilaginous fishes which possess gill slits to inhale dissolved oxygen.
  • Chimaera is also a cartilaginous fish, but it is having a single gill opening for respiratory gaseous exchange.
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