Advertisements
Advertisements
Question
First natural cytokinin was obtained from ______.
Options
Rice plants
Tobacco callus
Maize grains
Human urine
Advertisements
Solution
First natural cytokinin was obtained from Maize grains.
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 tea plants are never allowed to grow lengthwise. This is done by cutting their apical buds, a process known as pruning. In this way, tea plants get a dense growth and easy yield. Answer the following questions:
- Name the scientific phenomenon that is being overcome by pruning.
- What plant hormone is responsible for the scientific phenomenon mentioned in (a)?
- Name one plant hormone which inhibits the said phenomenon.
The figure given below shows the stages of ripening in a banana. Answer the question that follow:
Mention two characteristic features of this hormone.
Very Short Answer Question:
What is role of gibberellin in rosette plants?
Gibberellins are synthesised from ______.
Which hormone induces parthenocarpy in tomatoes?
The active ingredient of Agent Orange is an egual mixture of two phenoxy herbicides ____________.
Flowering in pineapple is promoted by ____________.
Differentiate between:
Stimulus and response
