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| Q. |
Among the following sets of salient features, which set does not exclusively characterize mammals? |
| A. | Presence of sweat, glands, hairs on skin and diphyoclonts |
| B. | Presence of mammary glands, sweat glands and diaphragm |
| C. | Presence of mammary' glands, sweat glands, and diaphragm |
| D. | Presence of mammary glands, hairs on skin and diaphragm. |
| Answer» C. Presence of mammary' glands, sweat glands, and diaphragm | |
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Explanation: Ayes are also worm blooded and their heart is four-chambered. Crocodiles (Reptilia) also have fourchambered heart. |
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