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Question
The only phytohormone which is a gas at ordinary temperature:
Options
Ethane
Ethyl alcohol
Ethylene
Ethyne
Solution
Ethylene
Explanation:
The only hormone that is gaseous at standard temperature is ethylene.
RELATED QUESTIONS
Name the following:
Growth-retarding hormone 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 question :
Name one plant hormone which inhibits the said phenomenon.
Write the name of______
- First hormone discovered in plants.
- Biological name of fungus from which Gibberellins were first isolated.
- The name given to the first cytokinin by Skoog and Miller.
Which hormone induces parthenocarpy in tomatoes?
Which hormone induces parthenocarpy in tomatoes?
Which hormone causes Bakanae disease of rice?
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 |
Identify the INCORRECT statement regarding physiological effects of ethylene.
IAA stands for ______.
Give one example of Parthenocarpy.
