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How do we detect the smell of an agarbat...

How do we detect the smell of an agarbatti (incense stick)?

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(a) Name the three types of nerves which constitute the peripheral nervous system. (b)What is the difference between a reflex action and walking? (c) How do we detect the smell of an incense stick (agarbatti)?

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Give reasons for the following observations (a) The smell of lighted incense stick spreads several metres away. (b) A liquid has a fixed volume but not a fixed shape. (c ) Ice floats over water.

What might happen if you do the experiment without the smoke from the incense stick? Now try it and check if the prediction was correct. What might be happening in the above experiment in the absence of smoke particles?

MBD -HARYANA BOARD-CONTROL AND COORDINATION-EXAMPLE
  1. What happens at the synapse between two neurons?

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  2. Which part of the brain maintains posture and equilibrium of the body?

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  3. How do we detect the smell of an agarbatti (incense stick)?

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  4. What is the role of the brain in reflex action?

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  5. What are plant hormones?Name any two

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  6. How is the movement of leaves of the sensitive plant different from th...

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  7. How is the movement of leaves of the sensitive plant different from th...

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  8. Give an example of a plant harmone that promtoes growth.

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  9. Design an experiment to demonstrate hydrotropism.

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  10. How does chemical coordination take place in animals?

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  11. Why is the use of iodised salt advisable

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  12. How does our body respond when adrenaline is secreted into the blood?

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  13. Why are some patients of diabetes treated by giving injections of insu...

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  14. Which of the following is plant hormone?

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  15. The gap between two neurons is called a

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  16. The brain is responsible for

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  17. What is the function of receptors in our body? Think of situations whe...

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  18. Draw a lebelled diagram of neuron and explain its function?

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  19. Draw the structure of neuron and label the following on it, Nucleus,de...

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  20. Which signals will get disrupted in case of a spinal cord injury?

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