AQA GCSE Biology: The Eye

What is the primary function of the eye?

• To protect the inner ear

• To detect sound waves

• To produce visual signals

• To receive and focus light onto the retina

Which cells in the eye are sensitive to light intensity?

• Red cells

• White cells

• Cone cells

• Rod cells

What happens to the pupil in bright light?

• It changes color

• It dilates

• It constricts

• It closes completely

What is the role of the suspensory ligaments in the eye?

• They adjust the lens shape for focusing

• They produce tears

• They detect color

• They protect the eye from debris

What is myopia?

• Inability to see in dim light

• Color blindness

• Long-sightedness

• Short-sightedness

Which muscle's contraction helps in focusing on near objects?

• Circular muscles

• Radial muscles

• Pectoral muscles

• Ciliary muscles

What type of lens is used to correct myopia?

• Plano-convex lens

• Biconvex lens

• Diverging lens

• Converging lens

What is the effect of laser surgery on the cornea for treating myopia?

• It slims down the cornea

• It thickens the cornea

• It colors the cornea

• It removes the cornea

What triggers the pupil reflex in dim light?

• Pupil detects color changes

• Pupil dilates to allow more light

• Pupil constricts to reduce light intake

• Pupil emits light

What is the primary risk associated with lens replacement surgery?

• Complete sight loss

• Night vision

• Increased vision clarity

• Color vision enhancement