Which part of the human brain is most well-developed?
In a neuron, conversion of elecrical signal
Assertion : Plants lack the nervous
Reason : It is so because of harmones
Give any one function performed by our brain.
Assertion : Olfactory receptors detect taste.
Reason : Olfactory receptors are present in cerebellum
Assertion : Endocrine glands are called ductless glands.
Reason : These glands direct pour their secretion into the blood.
Assertion : Reflex actions are
Reason : These actions are controlled by brain
Following are the two examples of plant movement.
What are plant hormones?
A plant in the laboratory is given increased dose of a hormone, which promotes the development of seedless fruits.
Assertion : Cytokinins are present
Reason : Cytokinins are responsible for
What are inhibitory hormones?
Name the source and target organs of adrenaline.
Observe the figure given below. In the figure, some parts are labelled as P, Q, R, S and T.
Adrenaline hormone is secreted in the body during emergency situations. What would be the effects of increased concentration of ad..
Which part of human brain controls body temperature?
Female sex harmone is termed as
Name any two types of tropic movements.
Identify the stimulus in
Write one function of each
(i) Auxin (ii) Gibberellins
Design an experiment to demonstrate hydrotropism.
Which of the following is a plant hormone?
Spinal cord originates from
Growth of pollen tube towards
Why adrenaline is known as emergency hormone?
What are the major parts of the brain? Mention the functions of different parts.
Nervous and hormonal systems together perform the function of control and coordination in human beings. Justify the statement.
(i) Suggest an explanation for the fact that the chemical produced
(ii) Write any three endocrine glands and chemical produced by ..
How does phototropism occur in plants?
Poster and balance of the body is controlled by
The main function of abscisic acid in plants is to
Name two components of central nervous system in humans.
Some situations in our day to day life require quick response from our body.
What are reflex actions? Give two examples. Explai..
Give an example of a plant hormone that promotes growth.
How do auxins promote the growth of a tendril around a support?
Why is it advised to use iodised salt in diet?
The gap between two neurons is called
Draw the structure of a neuron and explain its function
what is the need for a system of control and coordination in an organism?
Compare and contrast nervous and hormonal mechanisms for
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