A) cones only
B) rods only
C) both a and b
D) either a or b
Correct Answer: B
Solution :
The rods are longer, slender and cylindrical, while cones are shorter, thicker and somewhat cube shaped. Rods are related with vision in dim light. Cones are related with day vision and colour vision. Retina of nocturnal birds, such as owls, contains only rods. That is why owls sleep during day and hunts during night.
You need to login to perform this action.
You will be redirected in
3 sec
