Human Eye Quiz – Life Sciences

Which part of the eye controls the amount of light entering the eye?

• Cornea

• Retina

• Iris

• Lens

What is the function of the rods in the retina?

• Detect color

• Help in bright light vision

• Detect dim light and motion

• Produce aqueous humor

The image formed on the retina is:

• Upright and real

• Inverted and virtual

• Inverted and real

• Upright and virtual

Which structure helps in focusing light on the retina?

• Iris

• Sclera

• Optic nerve

• Lens

Which of the following is NOT part of the uveal tract?

• Iris

• Ciliary body

• Retina

• Choroid

Which nerve transmits visual signals from the retina to the brain?

• Trigeminal nerve

• Facial nerve

• Oculomotor nerve

• Optic nerve

What causes the blind spot in the human eye?

• Absence of cones

• Overcrowding of rods

• Area where optic nerve exits the eye

• Scarred retina

The aqueous humor is located between:

• Lens and retina

• Iris and cornea

• Cornea and sclera

• Retina and choroid

What is the role of the ciliary muscles?

• Adjust the pupil size

• Change the shape of the lens

• Move the eyeball

• Control tear production

Color blindness is usually caused by a defect in:

• Rod cells

• Cone cells

• Optic nerve

• Cornea