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All mammals , without any exception , ar...

All mammals , without any exception , are characterised by

A

viviparity and biconcave red blood cell

B

extra-abdominal testis and four-chambered heart

C

heterodont teeth and 12 pairs of cranial nerves

D

a muscular diaphragm and milk producing glands

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The correct Answer is:
D
Any animal of the mammalia a large class of warm-blood vertebrates having milk producing mammary gland in the remale, a thoracic diaphragm and a four-chambered heart.
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  2. Among the following which one lay eggs and does not produce young ones...

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  3. All mammals , without any exception , are characterised by

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  4. Animals of class-Mammalia have

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  5. Mammal's heart is

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  6. A group of animals having marsupium

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  7. Which one of the following is not a mammalian character?

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  12. Assertion : Bats and whales are classified as mammals Reason : Bats ...

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  15. Connecting link between Echinodermata and Chordata is :

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