alleryएक स्तनधारी के मध्य कर्ण (मध्य कान) में कितनी हड्डियाँ होती हैं?
Aएक
Bदो
Cतीन
Dचार
Answer & Solution
Correct answer: C. तीन
मध्य कान की तीन हड्डियाँ स्तनधारियों की प्रमुख परिभाषित विशेषताओं में से एक हैं।
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