Question: From NCERT 100% NCERT covered from Particular Keyword. NEET 2016 Explanations are 100% from NCERT | [Difficult level: Easy]
Which one of the following characteristics is not shared by birds and mammals?
(1) Breathing using lungs
(2) Viviparity
(3) Warm blooded nature
(4) Ossified endoskeleton
Answer:(2) Viviparity.
Aves are warm-blooded animals with feathers on their bodies and
forelimbs modified into wings for flying. Hind limbs are adapted for walking,
swimming, perching or clasping.
Aves are warm-blooded animals with feathers on their bodies and
forelimbs modified into wings for flying. Hind limbs are adapted for walking,
swimming, perching or clasping.
The unique features of mammals are the presence
of mammary glands and hairs on the skin. They commonly exhibit viviparity.
of mammary glands and hairs on the skin. They commonly exhibit viviparity.
