Q111 / 120 · NEET 2010 (Mains) · Zoology

Crocodile and penguin are similar to whale and dogfish in which one of the following features?

  • A
    possess a solid single-stranded central nervous system
  • B
    lay eggs and guard them till they hatch
  • C
    possess bony skeleton
  • Correct answer
    D
    have gill slits at some stage

Solution

Crocodile, penguin, whale and dogfish, all are chordates. So, all of these have gill slits at some stage of development.

Hence, the correct answer is option: 'D'.

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