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.
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Related Questions
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.
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Assertion. Lacrimal gland is a kind of endocrine gland which secretes an enzyme called thrombokinase.
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.
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Assertion. The image formed on the retina is straight and real.
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.
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Assertion. Myopia is caused due to the shortening of the eyeball from front to back.
Reason. Myopia can be corrected by using suitable convex (converging) lens and the power of the glasses used is mentioned in plus "+".
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- A is False and R is True.