Name:_________________________________________
Class:_____________
Answer all question.
1. Diagram below shows the human nervous system.
(a) Using the words given below, label the structures of nervous system correctly.
spinal cord
peripheral nerve
brain
(i)
(ii)
(iii)
[3]
(b) Arrange the statements below with number 1 to 3 to show how the nervous
system works.
Statement
Number
(i) Nerve impulse travels through neurone
(ii) Effector produce response
(iii) Receptor detect stimuli
[3]
[Total: 6 marks]
2. Each sensory organ is sensitive to certain stimuli.
(a) Match the sense and stimulus detected with the correct sensory organ.
Sensory organ
Sense
Stimulus
Smell
Touch, pain,
pressure, heat and
cold
Sight
Chemical
substances in food
Hearing
Sound
Touch
Chemical substance
in air
Taste
Light
[5]
(b) Diagram below shows the structures of the human skin.
(i)
State ONE factor that influence the sensitivity of skin.
……………………………………………………………………………………..[1]
(ii) Explain the relationship between the factor mentioned in (i) and the
sensitivity of the skin.
………………………………………………………………………………………...
……………………………………………………………………………………..[1]
(c)
Braille is a system to help the blind in reading and writing.
Explain why the blind use their fingertips to touch and feel the raised dots on the
reading material.
……………………………………………………………………………………………...
…………………………………………………………………………………………...[1]
[Total: 8 marks]
3. (a) The statements in the table below are about tropism in plant.
Mark (✔) in correct space.
Statements
Phototropism
Hydrotropism
Geotropism
Enable the plant to get support
Enable the plant to maintain cells
turgidity
Enable the plants to carry out
photosynthesis
[3]
(b) Mrs Rozzah likes to plant a variety of leafy plants around her home.
She bought two potted plants. A vase is placed outside the house while another
vase is placed inside her living room.
(i)
Differentiate between the plants placed in the living room and outside the
house.
………………………………………………………………………………………
……………………………………………………………………………………..[1]
(ii) State the type of response in (i) and explain why it happens.
………………………………………………………………………………………
……………………………………………………………………………………..[2]
[Total: 6 marks]
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