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..
Assertion : Plants lack the nervous
Reason : It is so because of harmones
Assertion : Endocrine glands are called ductless glands.
Reason : These glands direct pour their secretion into the blood.
Give any one function performed by our brain.
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.
Name two components of central nervous system in humans.
Design an experiment to demonstrate hydrotropism.
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.
A young green plant receives sunlight from direction only.
Growth of pollen tube towards
(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.
Why are some patients of diabetes treated by giving injection of insulin?
Which part of the human brain is most well-developed?
How is the movement of leaves of sensitive plant
Hypersecretion of growth hormone causes
Iodine is necessary for the synthesis of which harmone?
Name one plant hormone, which inhibits growth, write its one more function.
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
Name one plant growth hormone, which makes the seed dormant during extremely dry season.
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