Advertisements
Advertisements
प्रश्न
A farmer is fed up of weeds in his Wheat farm. Which of the following chemicals he can use to overcome the problem?
पर्याय
IBA
IAA
NAA
2,4 – D
उत्तर
2,4 – D
APPEARS IN
संबंधित प्रश्न
How does chemical coordination occur in plants?
Which of the following hormones regulate stomatal colour?
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 |
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.
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.
Name the phytohormone related with the given phenomenon.
- Apical dominance
- Bolting of Cabbage
- Artificial ripening of fruit
- Acts as Anti-transpirant by closing stomata
Which hormone induces parthenocarpy in tomatoes?
Identify the INCORRECT statement regarding physiological effects of ethylene.
Name the plant hormones responsible for the following
- elongation of cells
- growth of stem
- promotion of cell division
- falling of senescent leaves.
The only phytohormone which is a gas at ordinary temperature:
