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प्रश्न
In the given figure (a), (b) and (c), which appears more accurate and why?
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| (a) | (b) | (c) |
उत्तर
Figure (a) appears more accurate as roots are showing positive geotropism and negative phototropism and moving towards the earth and away from the light. While the shoot is showing negative geotropism and positive phototropism moving away from the earth and towards the light source.
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संबंधित प्रश्न
Give the scientific terms used to represent the Bending of roots towards water.
A potted plant is kept horizontally for a considerable time. The three positions of the parts A and B of the potted plant are shown in the following figures:
- Which figure shows the correct position taken by the parts A and B of the plant?
- What type of phenomenon is exhibited by the figure chosen in (a) above?
Why is the closing of a dandelion flower at dusk (when it gets dark) not a tropism?
The bending of the root of a plant away from a source of light is caused by a plant hormone called :
(a) cytokinin
(b) gibberellin
(c) abscisic acid
(d) auxin
Which of the following plant part exhibits negative phototropism?
(a) root
(b) branch
(c) leaves
(d) stem
Differentiate between:
Thigmotropism and geotropism
The root of the plant is ______.
- positively phototropic but negatively geotropic
- positively geotropic but negatively phototropic
- negatively phototropic but positively hydrotropic
- negatively hydrotropic but positively phototropic
The response of a plant part towards gravity is ______.
Differentiate phototropism from photonasty.
Thigmonasty can be seen in ______.
