SCIENCE
ZOOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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they all have a pouch
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they all have a cloaca
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they all have hair
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they all have a short gestational period
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Detailed explanation-1: -1. What five characteristics do mammals have in common? Mammals have hair or fur; are warm-blooded; most are born alive; the young are fed milk produced by the mother’s mammary glands; and they have a more complex brain than other animals. 2.
Detailed explanation-2: -hair, in mammals, the characteristic threadlike outgrowths of the outer layer of the skin (epidermis) that form an animal’s coat, or pelage. Hair is present in differing degrees on all mammals. On adult whales, elephants, sirenians, and rhinoceroses body hair is limited to scattered bristles.
Detailed explanation-3: -Mammals are distinguished from other vertebrate animals by several unique features. All mammals produce and secrete milk from mammary glands to feed their offspring. They also have hair on their bodies, although some mammalian groups have less hair than others.
Detailed explanation-4: -Biologists believe that hair is found exclusively in mammals.
Detailed explanation-5: -The presence of hair or fur. Sweat glands. Glands specialized to produce milk, known as mammary glands. Three middle ear bones. A neocortex region in the brain, which specializes in seeing and hearing. Specialized teeth. A four-chambered heart. 19-Mar-2020