Biology
Give biological reasons for the following :
The hand automatically shows the direction to turn a cycle without thinking.
Nervous System
ICSE 2013
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Answer
It occurs due to conditioned reflexes. These reflexes are learned responses to stimuli acquired individually during the life of an organism.
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The figure given below shows the epidermal cells of an onion bulb. This cell was then transferred to a drop of sugar solution.
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(ii) What scientific term is used for the changes as shown in (i) above ?
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