Q10 / 180 · AIIMS 2006 · Botany

All mammals without any exception are characterised by

A
viviparity and biconcave red blood cells
B
extra-abdominal testes and a four chambered heart
C
heterodont teeth and 12 pairs of cranial nerves
Correct answer
D
a muscular diaphragm and milk producing glands.

Solution

All mammals without any exception are characterized by a muscular diaphragm and milk producing glands.

Hence, the correct answer is option: 'D'.

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