How is human brain protected from mechanical injuries and shocks ?

Protection of Brain and Spinal Cord, Coordination in Human Body Through Nervous System, Tropic Movements in Plants | PadhAiPro

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TextProtection of Brain and Spinal CordCoordination in Human Body Through Nervous SystemTropic Movements in PlantsCBSE PYQ

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Plants have neither a nervous system nor muscles, even then they respond to stimuli. For example, the leaves of chhui-mui (touch-me-not) plant when touched begin to fold up and droop.

CASE_STUDIESCoordination in Human Body Through Nervous SystemTropic Movements in PlantsNastic Movements in Plants

Write the significance of peripheral nervous system in human beings.

TextProtection of Brain and Spinal CordCoordination in Human Body Through Nervous SystemTropic Movements in Plants

Name one directional growth movement each in response to chemicals and water in plants. Write an example for each of them.

TextProtection of Brain and Spinal CordCoordination in Human Body Through Nervous SystemTropic Movements in Plants

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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Name the part of nervous system which helps in communication between the central nervous system and other parts of the body. What are the two components of this system ?

TextNervous System in AnimalsReflex Action and Reflex ArcCoordination in Human Body Through Nervous SystemTropic Movements in PlantsGeotropism in PlantsNastic Movements in Plants

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 ?

TextNervous System in AnimalsReflex Action and Reflex ArcCoordination in Human Body Through Nervous SystemTropic Movements in PlantsGeotropism in PlantsNastic Movements in Plants