Question

An animal having more rods will be

• A. Active during day
• B. Active during night
• C. Have colour vision
• D. Equally active during day and night

Answer 1

The correct option is B Active during night

The vision by which organisms can see in dim light of late evening and night is known as scotopic vision. Rods are the secondary photoreceptors that lack colour discrimination but are activated by dim light and thus are responsible for scotopic vision in which organisms can see only shapes and movements in general. Therefore, an animal with more rods will be active during night but will not have color discrimination. Correct answer is B.