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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
Match the items in column A with those of column B.
| Column A | Column B | ||
| (a) | Auxin | (i) | apical dominance |
| (b) | Gibberellin | (ii) | cell-division |
| (c) | Cytokinin | (iii) | fruit ripening |
| (d) | Ethylene | (iv) | internodal elongation |
Name the following:
Growth-retarding hormone in plants.
The figure given below shows the stages of ripening in a banana. Answer the question that follow:
Mention two characteristic features of this hormone.
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
A farmer is fed up of weeds in his Wheat farm. Which of the following chemicals he can use to overcome the problem?
Antidiuresis is the role of ______ hormone.
Identify the INCORRECT statement regarding physiological effects of ethylene.
Name the plant hormones responsible for the following
- elongation of cells
- growth of stem
- promotion of cell division
- falling of senescent leaves.
Name various plant hormones. Also give their physiological effects on plant growth and development.
The response by parts of the plant towards stimulus is called as ______.
