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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
What is the general name of chemical substances which bring about control and coordination in plants?
Stems are
Name the following:
Growth-retarding hormone in plants.
Name the tissue that transports hormones within the plant body?
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 |
First cytokinin was discovered by Skoog and Miller while working on tissue culture of ____________ plant.
Antidiuresis is the role of ______ hormone.
Name various plant hormones. Also give their physiological effects on plant growth and development.
A plant growth inhibitor hormone which causes wilting of leaves is ______.
