Question

Assertion [A]: Owls have a better night vision.

Reason [R]: Owl eyes are dominated by cones.

• A. A is True and R is False
• B. R is True and A is False
• C. Both A and R are true and R is a correct explanation for A.
• D. Both A and R are true but R is not a correct explanation to A

Answer 1

The correct option is A A is True and R is False

• Owl eyes are dominated by the photoreceptor rod cells. It provides them with better night vision. Rod cells contain the pigment Rhodopsin which enhances their vision in low light.
• In addition, owls have larger eyes which increases the amount of light entering the eyes.
• During night when the intensity of light is very low, the iris regulates the amount of light entering the eye by adjusting the size of the pupil.
• Also, they have tapetum lucidum behind retina. It reflects the visible light back on the rods. This reflection increases the amount of light provided to the photoreceptors. Thus, providing a superior night vision to owls.