Biology
Assertion. Choroid layer provides nourishment to the eye and also prevents light rays form reflecting and scattering inside the eye.
Reason. Choroid layer is the outermost layer of the eyeball which surrounds the sclerotic layer. This layer contains two types of pigments-Rhodopsin and Iodopsin.
- Both A and R are True
- Both A and R are False
- A is True and R is False.
- A is False and R is True.
Sense Organs
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Answer
A is True and R is False
Explanation
Choroid layer lies between the retina and the sclera. The choroid plays a crucial role in maintaining eye health by supplying nutrients to the retina.
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Assertion. Reflexes are involuntary but all involuntary actions are not reflexes.
Reason. Reflexes and involuntary actions of our body are controlled by medulla oblongata and spinal cord respectively.
- Both A and R are True
- Both A and R are False
- A is True and R is False.
- A is False and R is True.
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Reason. Lacrimal gland is located in the upper outer portion of the orbit of the eye. Tears act as a lubricant and also have antiseptic property.
- Both A and R are True
- Both A and R are False
- A is True and R is False.
- A is False and R is True.
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Reason. Images from the retina are transmitted to the brain through the optic nerve. Then brain interprets it in an upright position. Both the eyes form two images but the brain interprets them as one due to the overlapping of the images.
- Both A and R are True
- Both A and R are False
- A is True and R is False.
- A is False and R is True.
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Reason. Myopia can be corrected by using suitable convex (converging) lens and the power of the glasses used is mentioned in plus "+".
- Both A and R are True
- Both A and R are False
- A is True and R is False.
- A is False and R is True.