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प्रश्न
Gibberellins are synthesised from ______.
पर्याय
Acetic acid
Mevalonic acid
Tryptophan
Ethephon
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उत्तर
Gibberellins are synthesised from Mevalonic acid
संबंधित प्रश्न
Which of the following hormones regulate stomatal colour?
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 |
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?
A farmer is fed up of weeds in his Wheat farm. Which of the following chemicals he can use to overcome the problem?
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.
Write the name of Hormone that can overcome the requirement of vernalization.
Which of the following is a NOT a naturally occurring phytohormone?
First cytokinin was discovered by Skoog and Miller while working on tissue culture of ____________ plant.
Study the diagram given below and answer the questions that follow:

- Name the phenomenon depicted by the shoot in the above diagram.
- Which plant hormone plays an important role in the above movement?
- Complete and rewrite the given statement by filling in the correct terms:
Shoots show positive ______ whereas, roots show positive ______.
