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Write the significance of peripheral nervous system in human beings.
How is human brain protected from mechanical injuries and shocks ?
Name one directional growth movement each in response to chemicals and water in plants. Write an example for each of them.
List two constituents of Central Nervous System (CNS). How are these components protected from injuries ?
Write two limitations of the use of electrical impulses.
Distinguish between hormonal co-ordination in plants and animals.
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