Which of the following characteristics is not shared by birds and mammals?
Breathing using lungs
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Both mammals and birds can regulate body temperature and have warm-blooded nature. They have lungs and hence use them for breathing. Both the groups have ossified endoskeletons (formation of bones by adding osteoblasts - osteogenesis, results in an ossified endoskeleton.)
But birds lay eggs and show oviparity whereas mammals give birth to live young and show viviparity (except Monotremes or egg-laying mammals)
So the correct answer is 'Viviparity'.
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Birds and mammals share one of the following characteristics as a common feature.
(a) Pigmented skin
(b) Pneumatic bones
(d) Warm blooded body
Which one of the following characteristic is not shared by birds and mammals?
Birds and mammals share one of the following characteristics as a common feature:
Which one of the following characteristics is not shared by birds and mammals?
Which of the following characteristics feature is found in all birds including flightless birds?