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प्रश्न
Why is ABA known as antitranspirant?
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उत्तर
ABA can cause efflux of K+ ions from the guard cells and result in closure of stomata. So, it is known as an anti-transpirant.
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संबंधित प्रश्न
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.
Answer the following question.
What are plant hormones? Name the plant hormones responsible for the following:
- Growth of stem
- Promotion of cell division
- Inhibition of growth
- Elongation of cells
Multiple choice question.
Which is employed for the artificial ripening of banana fruits?
Very Short Answer Question:
Which is the plant stress hormone?
Write the name of Hormone that can overcome the requirement of vernalization.
Which hormone promotes the production of male flowers in Cucurbits?
Name the plant hormones responsible for the following
- elongation of cells
- growth of stem
- promotion of cell division
- falling of senescent leaves.
Name the first hormone that was discovered in plant and its precursor.
The box given below contains twelve words. Out of these, ten can be arranged in five suitable matching pairs. Make these five pairs in the form of a table.
| Auxins, Abscisic acid, Fruit ripening, Cytokinins, Closure of stomata, Parthenocarpy, Ethylene, Gibberellins, Tropism, Stem elongation, Cuscuta, Cell division. |
Bakane disease of rice is caused by ______.
