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प्रश्न
The only phytohormone which is a gas at ordinary temperature:
विकल्प
Ethane
Ethyl alcohol
Ethylene
Ethyne
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उत्तर
Ethylene
Explanation:
The only hormone that is gaseous at standard temperature is ethylene.
संबंधित प्रश्न
Apical dominance phenomenon is caused by
Common gibberellin is
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 tea plants are never allowed to grow lengthwise. This is done by cutting their apical buds, a process known as pruning. In this way, tea plants get a dense growth and easy yield. Answer the following questions:
- Name the scientific phenomenon that is being overcome by pruning.
- What plant hormone is responsible for the scientific phenomenon mentioned in (a)?
- Name one plant hormone which inhibits the said phenomenon.
Very Short Answer Question:
Which is the plant stress hormone?
Which hormone promotes the production of male flowers in Cucurbits?
Which hormone induces parthenocarpy in tomatoes?
The active ingredient of Agent Orange is an egual mixture of two phenoxy herbicides ____________.
Define the following term:
Phytohormones
