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The growth movement of a plant part in r...

The growth movement of a plant part in response to the touch of an object is called:

A

thigmonasty

B

hydrotropism

C

thigmotropism

D

geotropism

Text Solution

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The correct Answer is:
C
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LAKHMIR SINGH & MANJIT KAUR-CONTROL AND COORDINATION -Exercise
  1. A growing seedling is kept in a dark room. A burning candle is placed ...

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

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

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

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

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

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

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

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

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

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

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  12. The movement of a shoot towards light is:

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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. The plant part which exhibits negative geotropism is:

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

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

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

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  18. There are three plants A,B and C. the flowers of plant A open their pe...

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  19. While conducting experiments to study the effect of various stimuli on...

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  20. P and Q are two types of plants having weak stems which cannot stand u...

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