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  9. Q21

RRB NTPC 2021 · Question 21 of 131

Which of the following is a cartilaginous fish?

  1. ASharkCorrect
  2. BRohu
  3. CSalmon
  4. DTuna

Answer: A. Shark

Explanation

Cartilaginous fish in the class Chondrichthyes include the subclass elasmobranchs (sharks, skates, and rays) and the older subclass of holocephalins (chimeras and elephant fish). Cartilaginous fish are the oldest extant jawed vertebrates or gnathostomes.

Source: RRB NTPC 2021 CBT 1 Previous Year Paper (3 Feb) — ixambee compilation with answer key · reliable-secondary

← Q20View full paper (131 questions)Q22 →

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