Question 5:
Diagram 4.1 shows two examples of reflex actions, P and Q.
Diagram 4.1
(a) Based on Diagram 4.1,
(i) state one similarity for reflex action P and Q. [1 mark]
(ii) how many types of neurones involved in the reflex action? [2 marks]
P : ………………………….
Q : ………………………….
(b) Complete the impulse pathway for the reflex arc in Diagram 4.2 by using the information given.
![](http://spmscience.blog.onlinetuition.com.my/wp-content/uploads/sites/10/2020/01/Picture61.png)
Diagram 4.2
(c) When an insect flies near to your eyes, what is the reflex action that will happen?
Answer:
(a)(i) The stimuli are sent to the spinal cord.
(a)(ii)
P : 2 types
Q : 3 types
(b)
X: Sensory neurone
Y: Motor neurone
(c) Eyes will blink automatically.
Diagram 4.1 shows two examples of reflex actions, P and Q.
![](http://spmscience.blog.onlinetuition.com.my/wp-content/uploads/sites/10/2020/01/Picture60.png)
(a) Based on Diagram 4.1,
(i) state one similarity for reflex action P and Q. [1 mark]
(ii) how many types of neurones involved in the reflex action? [2 marks]
P : ………………………….
Q : ………………………….
(b) Complete the impulse pathway for the reflex arc in Diagram 4.2 by using the information given.
![](http://spmscience.blog.onlinetuition.com.my/wp-content/uploads/sites/10/2020/01/Picture61.png)
![](http://spmscience.blog.onlinetuition.com.my/wp-content/uploads/sites/10/2020/01/Picture62.png)
(c) When an insect flies near to your eyes, what is the reflex action that will happen?
Answer:
(a)(i) The stimuli are sent to the spinal cord.
(a)(ii)
P : 2 types
Q : 3 types
(b)
X: Sensory neurone
Y: Motor neurone
(c) Eyes will blink automatically.