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प्रश्न
Name the plant hormones responsible for the following
- elongation of cells
- growth of stem
- promotion of cell division
- falling of senescent leaves.
थोडक्यात उत्तर
उत्तर
- elongation of cells: Auxin.
- growth of stem: Gibberellins.
- promotion of cell division: Cytokinin.
- falling of senescent leaves: Abscisic acid.
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Plant Hormones
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संबंधित प्रश्न
How does chemical coordination occur in plants?
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 |
List five plant growth hormones and briefly describe their roles.
The figure given below shows the stages of ripening in a banana. Answer the question that follow:
Mention two characteristic features of this hormone.
Multiple choice question.
Which is employed for the artificial ripening of banana fruits?
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 |
Antidiuresis is the role of ______ hormone.
IAA stands for ______.
A plant growth inhibitor hormone which causes wilting of leaves is ______.
The response by parts of the plant towards stimulus is called as ______.
