Advertisements
Advertisements
प्रश्न
The only phytohormone which is a gas at ordinary temperature:
पर्याय
Ethane
Ethyl alcohol
Ethylene
Ethyne
Advertisements
उत्तर
Ethylene
Explanation:
The only hormone that is gaseous at standard temperature is ethylene.
APPEARS IN
संबंधित प्रश्न
Which of the following is not a plant hormone?
List five plant growth hormones and briefly describe their roles.
Very Short Answer Question:
Which is the plant stress 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.
Name the phytohormone related with the given phenomenon.
- Apical dominance
- Bolting of Cabbage
- Artificial ripening of fruit
- Acts as Anti-transpirant by closing stomata
Apical dominance refers to ____________.
Match the following lists and select the correct option.
| List I | List II | ||
| i. | 2,4-D | a. | Promotes senescence and ripening of fruits |
| ii. | ABA | b. | DelaysJeaf senescence |
| iii. | Gibberellins | c. | Increases the length of the sugarcane stem |
| iv. | Ethylene | d. | Kills dicotyledonous weeds without affecting mature monocotyledonous plants |
| e. | Stimulates the closure of stomata |
Name the plant hormones responsible for the following
- elongation of cells
- growth of stem
- promotion of cell division
- falling of senescent leaves.
A plant growth inhibitor hormone which causes wilting of leaves is ______.
Which one of the following pair of plant hormones inhibit flowering in some plants?
