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Assertion : The base of semi-circular ca...

Assertion : The base of semi-circular canal is swollen and is called crista ampullaris.
Reason : Crista ampullaris contains a projectings ridge called ampulla which has hair cells.

A

If both assertion and reason are true and the reason is the correct explanation of the assertion.

B

If both assertion and reason are true but reason is not the correct explanation of the assertion.

C

If assertion is true but reason is false.

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
D
The inner ear also contains a complex system called vestibular apparatus, located above the cochlea.
The vestibular apparatus is composed of three semicircular canals and the otolith organ consisting of the saccule and utricle.
Each semi-circular canal lies in a different plane at right angles to each other.
The membranous canals are suspended in the perilymph of the bony canals.
The base of canals is swollen and is called ampulla, which contains a projecting ridge called crista ampullaris which has hair cells.
The saccule and utricle contain a projecting ridge called macula.
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A2Z-NEURAL CONTROL AND COORDINATION-Section B : Assertion-reasoning Questions
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  13. Assertion : The inner part of cerebral hemisphere is called white matt...

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  14. Assertion : The base of semi-circular canal is swollen and is called c...

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  15. Assertion : In the human eye, there are three types of rods which poss...

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  16. Assertion : A neuron is a microscopic structure composed of three majo...

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  17. Assertion : The neural organisation is very simple in lower invertebra...

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  18. Assertion : Neurons are excitable cells. Reason : The membrane of th...

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  19. Assertion : When a neuron is not conducting any impulse, i.e. resting,...

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  20. Assertion : Myelinated nerve fibre are enveloped with Schwan cells, wh...

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