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(a) What does a plant root do in respons...

(a) What does a plant root do in response to water? What is this phenomenon known as?
(b) What happens to the moonflower (i) during daytime, and (ii) at night? What is the phenomenon known as?

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LAKHMIR SINGH & MANJIT KAUR-CONTROL AND COORDINATION -Exercise
  1. (a) What does a stem (or shoot) do in response to gravity? What is thi...

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  2. (a) What does a Mimosa pudica plant do in response to touch? What is t...

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  3. (a) What does a plant root do in response to water? What is this pheno...

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  4. What is a tendril? Name the two types of tendrils. What does a tendri...

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  5. Name the five types of tropisms. How are tropic movements helpful to p...

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  6. Define chemotropism. Give one example of chemotropism. State whether t...

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  7. Distinguish between tropic movements and nastic movements in plants. G...

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  8. (a) What is meant by nastic movement in plants? Give one example of na...

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  9. A potted plant is kept horizontally for a considerable time. The three...

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  10. Name of the plant hormones which are responsible for the following eff...

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  11. Name the plant organs which are:

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  12. Why is the folding up of the leaves of a sensitive plant on touching w...

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  13. Why is the closing of a Dandelion flower at dusk (when it gets dark) n...

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  14. (a) What is meant by 'tropisms' (or tropic movements)? Explain with an...

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  15. (a) Define phototropism. Give one example of phototropism. (b) How d...

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  16. (a) Define geotropism. Give one example of geotropism. (b) What is m...

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  17. (a) How does control and coordination take place in plants? How does i...

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  18. (a) What is meant by positive tropism and negative tropism? Explain wi...

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  19. Which of the following is not a plant hormone?

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  20. One of the following plant hormones is responsible for the phenomenon ...

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