why not option 4???
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No, option D is also correct answer. Mammals has hair on their skin and mammary glands.two limbs and pinnae are also present.
malika83:
hair are present in whale's body
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3
Option 1st is correct
Why other options are wrong?
2- In cyclostoma paired appendages are absent
3- In Aves skin is dry and without gland
4- In mammals (Whale)-- Ear pinna and hair on body are absent
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