1.

Which one of the following groups of animals is correctly matched with its one characteristic feature without even a single exception?

A. Reptilian: possess 3 - chambered heart with one incompletely divided ventricle
B. Chordata: possess a mouth provided with an upper and lower jaw
C. Chondrichthyes: possess cartilagious endoskeleton
D. Mammalia: give birth to young one.
Answer» D. Mammalia: give birth to young one.


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