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NEET2010ZoologyEvolutionActual

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

Options

  1. Apossess a solid single-stranded central nervous system
  2. Blay eggs and guard them till they hatch
  3. Cpossess bony skeleton
  4. Dhave gill slits at some stage

Correct answer

D. have gill slits at some stage

Step-by-step solution

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

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