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The stimulus in the process of thigmotro...

The stimulus in the process of thigmotropism is:

A

touch

B

gravity

C

light

D

chemical

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The correct Answer is:
A
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LAKHMIR SINGH & MANJIT KAUR-CONTROL AND COORDINATION -Exercise
  1. The growth of a pollen tube towards the ovule caused by a sugary subst...

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  2. The bending of the shoot of a plant in response to light is called:

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  3. The stimulus in the process of thigmotropism is:

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  4. A growing seedling is kept in a dark room. A burning candle is placed ...

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  5. Which of the following acts as a stimulus in the process of hydrotropi...

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  6. The growth movement of a plant part in response to the touch of an obj...

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  7. The climbing organs of plants like tendrils grow towards any suppory w...

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  8. The rate of growth in roots is decreased by one of the following plant...

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  9. When the leaves of a Mimosa pudica plant are touched with a finger, th...

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  10. Dandelion flowers open the petals in bright light during the daytime b...

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  11. To which of the following directional stimulus roots of a plant do not...

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  12. One of the following is not caused by the growth related movement of t...

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  13. The bending of the root of a plant away from a source of light is caus...

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  14. Most of the plant hormones promote plant growth. A plant hormone which...

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  15. The movement of a shoot towards light is:

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  16. The bending of the root of a plant away from a source of light is caus...

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  17. The plant part which exhibits negative geotropism is:

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  18. Which of the following are not tropisms? (i) growing of pollen tube...

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  19. The chemical substance P is made and secreted by the meristematic tiss...

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  20. A potted plant is growing in a transparent glass jar. In this plant, X...

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