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Question
Stems are
Options
positively geotropic and negatively phototropic
positively geotropic and positively phototropic
negatively geotropic and positively phototropic
negatively phototropic and negatively geotropic
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Solution
negatively geotropic and positively phototropic
RELATED QUESTIONS
Which of the following is not a plant hormone?
What is Parthenocarpy?
Name the following:
Growth-retarding hormone in plants.
Answer the following question.
What are plant hormones? Name the plant hormones responsible for the following:
- Growth of stem
- Promotion of cell division
- Inhibition of growth
- Elongation of cells
Gibberellins are synthesised from ______.
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.
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 |
Which among the following is the CORRECT statement regarding ethylene?
The response by parts of the plant towards stimulus is called as ______.
Which plant hormone is called an antitranspirant?
