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प्रश्न
The response by parts of the plant towards stimulus is called as ______.
विकल्प
Nastic movement
Tropism
Tactic movement
Senescence
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उत्तर
The response by parts of the plant towards stimulus is called as tropism.
Explanation:
Tropism is the directional response of parts of a plant towards or away from a stimulus such as light, gravity, water, or touch. For example, bending of a plant towards light is called phototropism.
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संबंधित प्रश्न
Apical dominance phenomenon is caused by
Which of the following hormones regulate stomatal colour?
Match the items in column A with those of column B.
| Column A | Column B | ||
| (a) | Auxin | (i) | apical dominance |
| (b) | Gibberellin | (ii) | cell-division |
| (c) | Cytokinin | (iii) | fruit ripening |
| (d) | Ethylene | (iv) | internodal elongation |
Multiple choice question.
How many molecules of ATP are required to fix one molecule of nitrogen?
Very Short Answer Question:
Which is the plant stress hormone?
Write full form of 2,4-D
Cause of degreening is ______.
Coleoptile tips were removed and placed on agar for one hour, the agar would produce a bending when placed on one side of freshly cut coleoptile stumps.
What is the significance of the above experiment performed by Dr. F. Went?
Flowering in pineapple is promoted by ____________.
Match the following lists and select the correct option.
| List I | List II | ||
| i. | 2,4-D | a. | Promotes senescence and ripening of fruits |
| ii. | ABA | b. | DelaysJeaf senescence |
| iii. | Gibberellins | c. | Increases the length of the sugarcane stem |
| iv. | Ethylene | d. | Kills dicotyledonous weeds without affecting mature monocotyledonous plants |
| e. | Stimulates the closure of stomata |
