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Question
Gibberellins are synthesised from ______.
Options
Acetic acid
Mevalonic acid
Tryptophan
Ethephon
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Solution
Gibberellins are synthesised from Mevalonic acid
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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.
Which hormone induces parthenocarpy in tomatoes?
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 |
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Phytohormones
Which plant hormone is called an antitranspirant?
