The correct sequence of events occurring when we touch a hot object unconsciously :

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MCQ (Single)Reflex Action and Reflex ArcCBSE PYQ

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Define reflex action. With the help of a flow chart show the path of a reflex action such as sneezing.

Define a reflex arc. Why have reflex arcs evolved in animals ? Trace the sequence of events which occur, when you suddenly touch a hot object.

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Leaves of chhui-mui plant begin to fold up and droop in response to a stimulus. Name the stimulus and write the cause for such a rapid movement. Is there any growth involved in the movement ?

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Define geotropism in plants. What is meant by positive and negative geotropism ? Give one example of each type.

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What is the role of the brain in reflex action?

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