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प्रश्न
Where are auxins synthesized in a plant? Which organ of the plant shows:
- Positive phototropism
- Negative geotropism
- Positive hydrotropism
उत्तर
A plant's growing tips on its roots and shoots are where auxins are created.
- Shoot
- Shoot
- Roots
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संबंधित प्रश्न
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?
Name the plant organ which is positively phototropic.
What is meant by 'tropisms' (or tropic movements)? Explain with an example.
The growth of a pollen tube towards the ovule caused by a sugary substance as stimulus is an example of :
(a) phototropism
(b) chlorotropism
(c) gravitropism
(d) chemotropism
A growing seedling is kept in the dark room. A burning candle is placed near it for a few days. The tip part of the seedling bends towards the burning candle. This is an example of ______.
The shoot system grows upward in response to ______.
Analogy:
Hydrotropism: Response towards water:: Phototropism: ______.
The Scientific term used to represent the bending of roots toward water is called geotropism.
Observe the three figures given below. Which of the following depicts tropic movements appropriately?
 |
 |
 |
| A | B | C |
Growth of root towards water is ______.
