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Crocodile and penguin are similar to Whale and Dogfish in which one of the following features?
Option: 1
Possess a solid single stranded central nervous system
Option: 2
Lay eggs and guard them till they hatch
Option: 3
Possess bony skeleton.
Option: 4
Have gill slits at some stage
Answers (1)
The pharyngeal gill slits are present at some point in the life histories of all chordates, including the crocodile, penguin, whale, and dog fish. This is the distinctive trait of chordates.
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