Multiple Choice QuestionsAssertion: Organ of Corti rests on tectorial membrane.
Reason: It helps to maintain equilibrium of body
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false.
D.
If both assertion and reason are false.
The organ of Corti lies on the basilar membrane. It contains a series of electromechanically sensitive cells i.e. hair cells. They are the receptive end organs that generate nerve impulses in. response to sound vibrations. Thus, organ of Corti is actually the organ that perceives sound. Minute hairs project upward from hair cell and they are embedded in the tectorial membrane. Equilibrium of body is maintained with the help of semicircular canals, utricle and saccule of internal ear.
Assertion : Connective tissue inside the brain is essential for conduction of nerve impulse.
Reason : Connective tissue hold together the nerve cells of brain.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false
One common example of simple reflex is
tying your shoe laces while talking to another person and not looking at them
watering of mouth at the sight of a favourite food
climbing up a stairs in dark without stumbling
closing of eyes when strong light is flashed across them.
Injury to vagus nerve in humans is not likely to affect
tongue movements
gastrointestinal movements
pancreatic secretion
cardiac movements.
Which match is true?
| Vitamin deficiency disease | Vitamin | Source |
| Severe bleeding | Tocopherol | Milk, egg |
| Anaemia | Ascorbic acid | Lemon, orange |
| Night blindness | Retinol | Carrot, milk |
| Sterility | Calciferol | Milk, butter |
The black pigment in the eye which reduces the internal reflection is located in
retina
iris
cornea
sclerotic
Hearing impairment affects which part of brain?
Frontal lobe
Parietal lobe
Temporal lobe
Cerebellum
Assertion : Astigmatism is due to uneven curvature of lens.
Reason : It is treated with cylindrical lenses.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false
Assertion: Rhabdome is present in Palaemon.
Reason: Rhabdome has an important role in digestion
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false.
Switch
