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How many types of photoreceptor cells are present in the retina?

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in Biology – Class 11 by (272k points)
How many types of photoreceptor cells are present in the retina?

(a) Two

(b) Three

(c) Four

(d) Five

This question was addressed to me in an online quiz.

Query is from Neural Control and Coordination topic in division Neural Control and Coordination of Biology – Class 11

1 Answer

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Correct answer is (a) Two

To elaborate: There are two types of photoreceptor cells, namely, rods and cones. These cells contain the light-sensitive proteins called the photopigments. Daylight vision is the function of cones and twilight vision is the function of rods.

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