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Biology
7. Control and Coordination
Home · Class 10 · Biology · Ref. Book · 7. Control and Coordination
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Q6 of 65 Page 232

A child is frightened by a loud noise and shouts for help. In which order the different types of neurons in neurons involved will act?

from the receptor the information passes from sensory neuron to relay neuron and then to motor neuron.

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3

Observe the figure given below. In the figure, some parts are labeled as P,Q,R,S and T. Given below are functions associated with these parts.



Which part of the brain is matched with incorrect function?

4

The diagram shows a reflex arc in which a bee sing causes the arm to be moved quickly?


If the relay neuron is damaged, how will the transmission of nerve impulses in the reflex are be affected?

5

Adrenaline hormone is secreted in the body during emergency situations. What would be the effects of increased concentration of adrenaline on body?

7

Following are certain reflex actions occurring in our body.

I. Moving to the side of road when a speeding car approaches.


ii. Closing of eyes in response to a sudden bright light.


iii. Shouting when we are suddenly disturbed or get scared


iv. Withdrawing hands on touching a hot surface. The reflex is given below, will be occurring for,


Receptors (sense organs) spinal cord targets/effectors

Questions · 65
7. Control and Coordination
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