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प्रश्न
Gibberellins are synthesised from ______.
विकल्प
Acetic acid
Mevalonic acid
Tryptophan
Ethephon
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उत्तर
Gibberellins are synthesised from Mevalonic acid
संबंधित प्रश्न
Stems are
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.
Why is ABA known as antitranspirant?
Which hormone induces parthenocarpy in tomatoes?
Flowering in pineapple is promoted by ____________.
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 |
Define the following term:
Phytohormones
Differentiate between:
Stimulus and response
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. |
Bakane disease of rice is caused by ______.
