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प्रश्न
What is the difference between photonasty and thigmonasty?
उत्तर
| Photonasty | Thigmonasty |
| It is the non-directional movement in plants in response to light. | It is the non-directional movement in plants in response to touch. |
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संबंधित प्रश्न
Name the plant organ which is positively phototropic.
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 shows negative geotropism.
One of the following plant hormones is responsible for the phenomenon of phototropism in plants. This is :
(a) gibberellin
(b) eltroxin
(c) cytokinin
(d) auxin
The stimulus in the process of thigmotropism is ______.
A potted plant having straight parts A and B was placed horizontally on its side as shown in Figure (i). After a few days, it was observed that parts A and B of the plant acquired new positions as shown in Figure (ii).
- Name the phenomenon exhibited by the position of plant parts A and B in Figure (ii).
- Name the stimulus (other than sunlight) which causes plant part A to grow and bend upwards, and plant part B to bend downwards.
Roots of plants are:
______ flowers bloom as the temperature increases.
Write the scientific terms used to represent the following:
Bending of roots towards the water.
Which flowering plant shows a photo nasty just opposite to that of a Dandelion?
Name the following:
The tropic movement of plant parts in response to chemicals.
