REVISON F3 SET 1

One of the common vision defect in human eyes is short-sightedness. This is because the image is formed .......... the retina.

• behind

• in front of

• on the retina

Blind spot does not have

• receptors

• photoreceptors

• iris

• sclera

Part of plants which grows towards stimulus is known as

• Response in plant

• Nastic movement

• Negative tropisms

• Positive tropisms

Mimosa sp. responds to touch by folding its leaves inwards when touched. The responds occurs rapidly.

• Thigmotropism

• Phototropism

• Geotropism

• Nastic movement

Where is the sensory cell for smell located?

• On the top of the nasal cavity.

• Inside the nasal cavity.

• Inside the smell receptor.

• There is nothing like sensory cell in this world.

Diagram 4 shows a section through part of the human head containing a sensory organ.

Which of the parts labelled A, B, C and D, is a sensory cell?

• A

• B

• C

• D

When a person suffers from flu, the food will not be delicious. This is so because

• Nose and tongue are no longer work

• Bacteria in the mouth weaken the ability of the cell-receptor to detect the taste of the food

• The abundance of mucous quantities in the nasal opening prevents chemicals from stimulating the receptor cells of the smell

• Sensitive cells have been attacked by flu virus and cannot function

Diagram 5 shows different area of human tongue.

Which parts are more sensitive to vinegar and honey?

• P, R

• P, Q

• Q, S

• R, P

Which of the following is not a type of receptor in skin?

• Touch receptor

• Hot receptor

• Cold receptor

• Pressure receptor

Name structure A

• Pupil

• Iris

• Cornea

• Retina