Question

Hearing in rabbit is better than frog. One reason for this is that rabbit has

• A. Three semicircular canal
• B. Vibratile tympanic membrane
• C. Movable pinna
• D. Both fenestra ovalis and eustachian tubes

Answer 1

Answer: (C)

Movable pinna

Ear of frog consists of only two parts - middle and internal ear but no external ear. In the rabbit, ear has three regions which are external, middle and internal. External ears consist of the pinna (auricle) and auditory canal (external auditory meatus). Pinna is provided with voluntary muscle and is supported by elastic fibrocartilage. Pinna helps in collecting the sound waves. So, hearing in the rabbit is better than the frog.