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  • 1(current)
Q. No.

Match the following :

A. IAA i. Herring sperm DNA
B. ABA ii. Bolting
C. Ethylene iii. Stomatal closure
D. GA iv. Weed-free lawns
E. Cytokinins v. Ripening of fruits

Options:

A B C D E
1. iv iii v ii i
2. v iii iv ii i
3. iv i v iii ii
4. v iii ii i iv

Subtopic:  Growth Hormones & Auxin | Gibberellin | Cytokinin | Ethylene | Abscisic Acid |
 91%
Level 1: 80%+
Hints
A higher ratio of cytokinin in medium of tissue culture in plants:
1. induces growth of shoot buds
2. induces root formation
3. leads to death of cells in callus
4. leads to a decrease in cell division

 
Subtopic:  Cytokinin |
 85%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
Identify the incorrect statement:
1. Cytokinins were discovered as kinetin (a modified form of adenine, a purine) from the autoclaved herring sperm DNA.
2. Kinetin occurs naturally in plants.
3. Natural cytokinins are synthesised in regions where rapid cell division occurs.
4. Cytokinins help overcome the apical dominance.
Subtopic:  Cytokinin |
 95%
Level 1: 80%+
Please attempt this question first.
Hints
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Cytokinin in flowering plants does not:
1. help to produce new leaves
2. promotes the formation of chloroplasts in leaves
3. inhibit lateral shoot growth
4. promote adventitious shoot formation
Subtopic:  Cytokinin |
 82%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
Consider the given two statements:
Statement I: Kinetin occurs naturally in plants.
Statement II: Zeatin does not occur naturally in plants.
 
1. Statement I is correct; Statement II is incorrect
2. Statement I is correct; Statement II is correct
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
Subtopic:  Cytokinin |
 75%
Level 2: 60%+
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Hints
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