AIPMT MAINS 2010 Zoology Chordates MCQ Question
Crocodile and penguin are similar to Whale and Dogfish in which one of the following features?
Possess a solid single stranded central nervous system
Lay eggs and guard them till they hatch
Possess bony skeleton.
Have gill slits at some stage
Correct Answer
Detailed Explanation
Crocodile, Penguin, Whale, and Dogfish all are chordates. So, all have gill slits at some stage of development.
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