Correct option is A
Sol. The
ossicles are actually three bones (malleus, incus, and stapes) located in the middle ear. The statement that they are 2 bones is incorrect.
Explanation of each option:
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(a) Ossicles are 2 bones –
Incorrect answer. The ossicles are three bones in the middle ear, not two. They are critical for transmitting sound vibrations.
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(b) Tympanic membrane is also known as eardrum – This statement is correct. The tympanic membrane is commonly called the eardrum and it vibrates in response to sound waves.
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(c) Cochlea is the part of inner ear – This is correct. The cochlea is a part of the inner ear responsible for converting sound vibrations into electrical signals for the brain.
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(d) Pinna is part of external ear – This is correct. The pinna is the visible part of the external ear that helps capture sound.