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प्रश्न
Write full form of 2,4-D
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उत्तर
2,4-Dichloro phenoxy acetic acid
संबंधित प्रश्न
What is the general name of chemical substances which bring about control and coordination in plants?
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?
A farmer is fed up of weeds in his Wheat farm. Which of the following chemicals he can use to overcome the problem?
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.
Match the column A with B
| A | B | |
| i. | Epinasty of flower | GA3 |
| ii. | Natural auxin | NAA |
| iii. | Flowering in Litchi | IAA |
| iv. | Bolting of Beet | Ethylene |
The active ingredient of Agent Orange is an egual mixture of two phenoxy herbicides ____________.
Name the plant hormones responsible for the following
- elongation of cells
- growth of stem
- promotion of cell division
- falling of senescent leaves.
Give one example of Parthenocarpy.
Differentiate between:
Stimulus and response
