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प्रश्न
First natural cytokinin was obtained from ______.
विकल्प
Rice plants
Tobacco callus
Maize grains
Human urine
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उत्तर
First natural cytokinin was obtained from Maize grains.
संबंधित प्रश्न
A plant hormone related with inhibition of senescence is
Which of the following hormones regulate stomatal colour?
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.
A gardener wants to give bushy appearance to plants in our college campus.
- What should he do to achieve the same?
- Which property of phytohormones he must be aware of?
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Which of the following is a NOT a naturally occurring phytohormone?
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 various plant hormones. Also give their physiological effects on plant growth and development.
Bakane disease of rice is caused by ______.
