Question : Among the following sets of salient features, which set does not exclusively characterize mammals?
Option 1: Presence of sweat glands, hairs on skin and diphyodonts
Option 2: Presence of mammary glands, sweat glands and diaphragm
Option 3: presence of mammary gland, sweat glands and diaphragm
Option 4: Presence of mammary gland, hairs on skin and diaphragm
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Correct Answer: presence of mammary gland, sweat glands and diaphragm
Solution : The Correct Answer is presence of mammary gland, sweat glands and diaphragm
Mammals are distinguished by their placenta, hairy skin, mammary glands, muscular diaphragms, and the ability to give birth to young. Aves have four chambers in their hearts and worm blood. The reptile class crocodiles also have a four-chambered heart. Because of their body hair, mammals can be recognized. Among all living things, mammals rank among the most intelligent. A wide range of animals, including cats, people, and whales, are considered mammals.
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