The main reason that rods are more sensitive to light than cones is that

Question $10$Select one:

a$.$

the photopigment of rods is much more sensitive to light than the photopigment used in cones.

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b$.$

the eye contains $1000$ times as many rods as cones.

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c$.$

the rod transduction mechanism provides greater signal amplification.

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d$.$

rods are sensitive to a much broader range of wavelengths.

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e$.$

rods have many different types of opsin proteins.