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.
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 |
C.
| Night blindness | Retinol | Carrot, milk |
Night blindness is the inability to see in dim light or at night. It is due to disorder of the cells in the retina that are responsible for vision in dim light and can result from dietary deficiency of vitamin A (retinol).
| Name | Sources | Effect of deficiency |
| Vitamin C/ Ascorbic acid | Citrus fruits such as lemon, orange etc. Green vegetables, Potatoes etc. | Scurvy is characterised by wound healing an dgrowth retardation etc. |
| Vitamin D/ Ergocalciferol and Cholecalciferol | Synthesized in skin cells in sunlight. Also found in butter, liver, kidneys, egg yolk etc. | Rickets, a disorder of children of 6 months to 2 years. |
| Vitamin E/ Tocopherol | Green vegetables, oils, egg yolk, wheat, animal tissues | Reversible sterility in female. |
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.
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