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The plant part which exhibits negative g...

The plant part which exhibits negative geotropism is:

A

root

B

stem

C

branch

D

leaves

Text Solution

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The correct Answer is:
B
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Explore conceptually related problems

(a) Define geotropism. Give one example of geotropism. (b) What is meant by 'positive geotropism' and negative geotropism? Give one example of each type. Draw a labelled diagram to illustrate your answer indicating the plant part which shows positive geotropism and the plant part which shown negative geotropism. (c) Name one plant part which exhibits positive thigmotropism.

Root shows negative geotropic in

A plotted plant is growing in a transparent glass jar. In this plant, X and Y are the two growing parts having a lot of meristematic tissue. It is observed that the part X of this plant exhibits positive geotropism but negative phototropism. On the other hand, part Y of this plant exhibits negative geotropism but positive phototropism. (a) Name the part X of plant. (b) Name the part Y of plant. (c) Which part of the plant, X or Y, will exhibit positive hydrotropism? (d) Which part of the plant, X or Y, can have tendrils on it? (e) Which phytochormone causes the part X to exhibit negative phototropism?

(a) What is meant by positive tropism and negative tropism? Explain with examples. (b) Define thigmotropism. Give one example of thigmotropism. (c) What is the difference between thigmotropism and thigmonasty? Name one plant which exhibits thigmotropism and one plant which exhibits thigmonasty. What behaviour (or responses) of these plants make you think that they exhibit thigmotropism and thigmonasty respectively?

The element that exhibits negative oxidatio0n state In IIIA group elements is

Give one example each of a plant part: (a) which is positively hydrotropic as well as positively geotropic (b) which is positively phototropic but negatively geotropic.

Exampe of positive geotropism is

Example of positive geotropism is

LAKHMIR SINGH & MANJIT KAUR-CONTROL AND COORDINATION -Exercise
  1. The movement of a plant part in response to the force of attraction ex...

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

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  3. The plant part which exhibits negative geotropism is:

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

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

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

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

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

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

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

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

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

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

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  14. The stimulus in the process of thigmotropism is:

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

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

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

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

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

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

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