Question

some important question related. to chapter control and coordination

Answer 1

1.Why is it advised to use iodised salt in our diet ?
Answer. Iodine stimulates the thyroid gland to produce thyroxin hormone. Deficiency of this hormone results in the enlargement of the thyroid gland. This can lead to goitre.
2.State how concentration of auxin stimulates the cells to grow longer on the side of the shoot which is away from light ?
3. What is synapse ? In a neuron cell how is an electrical impulse created and what is the role of synapse in this context ?
4. What is meant by reflex-action ? With the help of a labelled diagram trace the sequence of events which occur when we touch a hot object.

Answer 2

HEY DEAR!!
HERE ARE SOME QUESTIONS...

Question-1
What is a neuron?

Question-2
Name any two types of tropism.

Question-3
What is a phytohormone? Name any two phytohormones.

Question-4
Mention the receptors for light and sound in animals.

Question-5
How does control and coordination takes place in plants?

Question-6
Discuss phototropism.

Question-7
Differentiate between tropic and nastic movements.

Question-8
Describe the central nervous system in human beings.

Question-9
Define reflex action with suitable examples.

Question-10
Nervous and hormonal system together perform the function of control and coordination in human beings. Justify the statement.

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