Distinguish between choroid and retina.

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Solution

Choroid Retina
1 Choroid is the middle vascular layer of eye.
Retina is the innermost nervous coat of eye.
2 It contains numerous blood vessels that provide nutrients and oxygen to retina and other tissues. It contains photoreceptor cells, rods and cones that are associated with twilight and colour vision respectively.
3 It is dark in colour and prevents internal reflection of light in the eye. The rod cells hep in dark vision and the cone cells helps in the perception of colours.

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	Choroid	Retina
1	Choroid is the middle vascular layer of eye.	Retina is the innermost nervous coat of eye.
2	It contains numerous blood vessels that provide nutrients and oxygen to retina and other tissues.	It contains photoreceptor cells, rods and cones that are associated with twilight and colour vision respectively.
3	It is dark in colour and prevents internal reflection of light in the eye.	The rod cells hep in dark vision and the cone cells helps in the perception of colours.