Question

answer these TIGER' questions:
1. What helps a tiger to move in the dark?​

Answer 1

Tigers have more rods (responsible for visual acuity for shapes) in their eyes than cones (responsible for color vision) to assist with their night vision. The increased number of rods allows them to detect movement of prey in darkness where color vision would not be useful.

Tigers have a structure at the back of the eye behind the retina called the tapetum lucidum that enables them to have better night vision. This mirrorlike structure reflects light (that has not already been absorbed by the eye) back into the eye a second time to help produce a brighter image. The tapetum lucidum causes their eyes to glow at night when a light is shone on them.

Cats in general have a broad horizontal line of nerve cells near the central portion of their eye that enables them to have better peripheral vision. This characteristic is especially useful for hunting prey that is running across a plain.

Tiger eyes have large lenses and pupils that increase the amount of light let into the eye. This characteristic helps the tiger with night vision and when there are low light levels available.

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