CLCE 3rd YEAR 2022: SENSE ORGANS QUIZ

The diagram shows a section through a human eye.

Which structure contains muscle fibres that contract in response to sudden changes in light intensity?

• A

• B

• C

• D

A person is sitting in a dark room.

What happens in the eye when a light is switched on?

• A

• B

• C

• D

The diagram shows a section through the human eye.

Where will an image be detected when a person looks at an object?

• A

• B

• C

• D

The diagram shows part of a person’s nervous system that has been cut at X.

A bee stings the finger, as shown.

What are the effects of this sting on the person?

• A

• B

• C

• D

A lack of which nutrient causes night blindness?

• Calcium

• Iron

• Vitamin A

• Vitamin D

Which diagram shows how light from a distant object is focused on the retina to form a clear image?

• A

• B

• C

• D

A light of varying intensity was shone into a person’s eye for 50 seconds.

The graph shows changes in pupil size as the light intensity was changed.

Which statement explains the change in pupil size?

• The lighter slowly becoming brighter

• The light suddenly becoming brighter

• The lighter slowly becoming dimmer

• The light suddenly becoming dimmer

The diagram shows a section through a human eye.

Which structure contains the muscles which contract to produce a focused image on the retina?

• A

• B

• C

• D

................................. is any specified tissue or cell sensitive to any stimulus

• Effector

• Affector

• Dendrite

• Receptor

........................ are rods and cones receptors of the retina of the eye.

• Photoreceptors

• Chemoreceptors

• Mechanoreceptors

• Thermoreceptors