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Question: Answered & Verified by Expert
All mammals without any exception are characterised by
BiologyAnimal KingdomAIIMSAIIMS 2006
Options:
  • 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
  • D a muscular diaphragm and milk producing glands.
Solution:
2101 Upvotes Verified Answer
The correct answer is: a muscular diaphragm and milk producing glands.
All mammals without any exception are characterized by a muscular diaphragm and milk producing glands.

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