CONTROL AND COORDINATION
1.
Name two tissues in animals which help in
control and coordination
2.
What is a receptor?
3.
Name the receptors which help to detect taste
and smell.
4.
How does nerve impulse travel in our body?
5.
What is a reflex arc? Show it with the help of a
diagram.
6.
What is the significance of reflexes? Give
examples of reflexes.
7.
Trace the sequence of events which occur when
your hand touches a hot object.
8.
Trace the sequence of events which occur when a
bright light is focussed on your eyes?
9.
What is the role of brain in reflexes?
10.
What are the components of central nervous
system? How does CNS communicate with other parts of the body?
11.
Which part of the brain is responsible for
sensation of hunger and thirst?
12.
Draw a well labelled diagram of human brain.
13.
State the functions of various parts of brain.
14.
Differentiate between reflexes and involuntary
and voluntary activities giving examples.
15.
How is nervous tissue protected?
16.
How does the nervous tissue cause action?
17.
What happens at synapse between two neurons?
18.
How do we detect the smell of an incense stick?
19.
Discuss the kind of movement shown by plants
with examples.
20.
How do plant cells change shape?
21.
Explain the role of auxins in tropisms.
22.
How do auxins promote the growth of tendril
around a support?
23.
Compare and contrast nervous and hormonal means
of coordination.
24.
Give the functions of growth promoting hormones.
Give examples
25.
Give the function of growth inhibiting hormone.
Give examples.
26.
Design an experiment to demonstrate
hydrotropism.
27.
State the functions of adrenaline.
28.
Why is it important to have iodised salts?
29.
What causes dwarfism?
30.
Which hormones are responsible for changes
happening in your body in puberty?
31.
How does the body ensure that hormones are
secreted in precise amount as deficiency as well as excess of hormones cause diseases?
32.
Which hormone regulates blood sugar levels?
33.
What do you understand by the feedback
mechanism?
34.
What is the function of receptors in our body?
Think of situations where receptors do not work properly. What problems are
likely to arise?
35.
Which signal will get interrupted in case of
spinal cord injury?
36.
What is the need for a system of control and
coordination in plants?
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