Biology Level pending

The figure below shows the distribution of receptor cells X (solid line) and Y (dashed line) in the retina.

Which of the following options from A to D chooses all the correct statement(s) from below?

A. X are usually located in the center of the retina.

B. X are less sensitive to light than Y.

C. “a”is the position of the blind spot.

D. \(\frac{(Number of X)}{(Number of Y)}\)is much higher in nocturnal (active in nighttime) animals than in diurnal (active in daytime) ones.


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