Q. Indole acetic acid (IAA) stands for

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Q. Cause of graves' disease is production of an abnormal

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Q. During periods of rapid growth, sexual maturation and stress situations, high levels of

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Q. In myelinated neurons, impulse jumps from node to node. This is called as

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Q. Hormone is a Greek word meaning

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Q. System in animals which possess glands that secrete hormones is known as

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Q. An appropriate stimulus which can initiate a nerve impulse is known as

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Q. Excess thyroxine produces a condition called

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Q. Nervous design in any animal is highly co-related with its

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Q. In raising blood pressure, two hormones whose effect is synergistic are

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Q. Neuroglia makeup half of nervous system in

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Q. A single cubic centimeter of human brain may contain

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Q. Modification of behaviour through a diminution of response to repeated stimuli is

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Q. Abnormal development of hands, feet and jaws is known as

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Q. Sprouting of potatoes is inhibited by

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Q. Ability to form wing muscles and wings for flight in honey bees is

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Q. Wounded plants develop masses of amorphous material with very poor differentiation known as

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Q. Pathway of passage of impulse during a reflex action is called

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Q. From Platyhelminthes to chordates including humans, nervous system present is

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Q. Possible sign stimulus for digger wasp for which it responds is

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