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प्रश्न
First natural cytokinin was obtained from ______.
विकल्प
Rice plants
Tobacco callus
Maize grains
Human urine
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उत्तर
First natural cytokinin was obtained from Maize grains.
संबंधित प्रश्न
How does chemical coordination occur in plants?
Which of the following hormones regulate stomatal colour?
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.
The figure given below shows the stages of ripening in a banana. Answer the question that follow:
Mention two characteristic features of this hormone.
Buyers often complain that a particular fruit merchant uses some chemical to ripen fruits in his shop.
Name the chemical he must be using to do so.
Write full form of 2,4-D
Cause of degreening is ______.
In which part of plant does auxin synthesis occur?
Define the following term:
Phytohormones
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. |
