Observe the figure given below. In the figure, some parts are labelled as P, Q, R, S and T.
Following are the two examples of plant movement.
Give the exact location and function of cerebellum.
Assertion : Cytokinins are present
Reason : Cytokinins are responsible for
Adrenaline hormone is secreted in the body during emergency situations. What would be the effects of increased concentration of ad..
Give any one function performed by our brain.
Assertion : Endocrine glands are called ductless glands.
Reason : These glands direct pour their secretion into the blood.
Assertion : Plants lack the nervous
Reason : It is so because of harmones
Name two tissues, which provide control and coordination in animals.
Nerves and hormones both are used to control processes within the body. Using examples
With the help of a labelled diagram, illustrate the pathway of response when someone pricks in your hand with a pin.
Name any two types of tropic movements.
What are the major parts of the brain? Mention the functions of different parts.
Design an experiment to demonstrate hydrotropism.
Name two components of central nervous system in humans.
Nervous and hormonal systems together perform the function of control and coordination in human beings. Justify the statement.
Some situations in our day to day life require quick response from our body.
What are reflex actions? Give two examples. Explai..
Assertion : Reflex actions are
Reason : These actions are controlled by brain
Give some examples of involuntary actions.
Assertion : Cerebrum acts as the main thinking part of the brain.
Reason : Cerebrum is responsible for reasoning, speech, intellig..
Write one function of each
(i) Auxin (ii) Gibberellins
Give an example of a plant hormone that promotes growth.
Growth of pollen tube towards
A young green plant receives sunlight from direction only.
(i) Suggest an explanation for the fact that the chemical produced
(ii) Write any three endocrine glands and chemical produced by ..
(i) A nerve input signal travelled only upto the spinal cord
(ii) Draw a nerve pathway for the above action and suggest
Name the sensory receptors found in the nose and on the tongue.
How does chemical coordination take place in animals?
All information about our environment is detected by specialised cells.
Which part of the human brain is most well-developed?
Why are some patients of diabetes treated by giving injection of insulin?
Hypersecretion of growth hormone causes
How is the movement of leaves of sensitive plant
Name one plant hormone, which inhibits growth, write its one more function.
Iodine is necessary for the synthesis of which harmone?
Deficiency of which hormone causes diabetes?
Identify the stimulus in
Why is it advised to use iodised salt in diet?
following are certain reflex actions occuring in our body
Female sex harmone is termed as
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