Eye

Question 1

Cornea

Answer 1

Refracts light entering

Question 2

Lens

Answer 2

Changes shape to focus light

Question 3

Retina

Answer 3

Has photo receptors (rods/cones) to sense light

Question 4

Rods

Answer 4

Receptors that detect movement in dim light

Question 5

Cones

Answer 5

Receptors that detect color and form sharp images in brighter light

Question 6

Blind spot

Answer 6

Where optic nerve leaves the back of the eye

There are no receptors

Question 7

Animals with eyes at the front of their head

Answer 7

Have good binocular vision

Need two functioning eyes for depth perception

Question 8

Depth perception

Answer 8

3D vision/judging distances

Question 9

Prey animals with eyes on the sides of their heads

Answer 9

No binocular vision, poor depth perception

Question 10

Monocular vision

Answer 10

Greater field of view for looking for predators

Can see 2 objects at once (each side used separately)

Question 11

Nictitating membranes

Answer 11

3rd eye lids
Many animals (dogs/cats) not humans
Useful for hunting / removing debris (sand, dirt, water)

Question 12

Tapetums

Answer 12

Many animals (dogs/cats), not humans
Reflective layer in eye , increases ability to see in dark
Green reflection at night when shining light at animal