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(a) Define phototropism. Give one exampl...

(a) Define phototropism. Give one example of phototropism.
(b) How does phototropism occur in a plant stem (or shoot)? Explain with the help of labelled diagrams.
(c) What is meant by positive phototropism and negative phototropism? Give one example of each type.

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LAKHMIR SINGH & MANJIT KAUR-CONTROL AND COORDINATION -Exercise
  1. Why is the closing of a Dandelion flower at dusk (when it gets dark) n...

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

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

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

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

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

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

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

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  9. The movement of a plant part in response to the force of attraction ex...

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  10. The movement of sunflower in accordance with the path of the sun is du...

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  11. The plant part which exhibits negative geotropism is:

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  12. A big tree falls in a forest but its roots are still in contact with t...

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  13. Which of the following is not caused by a growth movement?

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  14. The root of a plant is: (i) positively phototropic but negatively g...

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  15. The main function of the plant hormone called abscisic acid is to:

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  16. The growth of tendrils in pea plants is due to the:

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  17. Which of the following phytohormone is not associated with the promoti...

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  18. The plant hormone which triggers the fall of mature leaves and fruits ...

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  19. Which of the following terms denotes the movement of the root of a pla...

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  20. The growth of a pollen tube towards the ovule caused by a sugary subst...

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