Q. No.Cytokinins
| 1. | Helps to produce new leaves |
| 2. | Helps to produce chloroplasts in leaves |
| 3. | Lateral shoot growth, Adventitious Shoot Formation |
| 4. | All of these |
Subtopic: Cytokinin |
97%
Level 1: 80%+
Hints
Kinetin term was used for …..by…
| 1. | Cytokinins, Darwin |
| 2. | Cytokinin, Skoog And Miller |
| 3. | ABA, Darwin |
| 4. | ABA, F. Skoog |
Subtopic: Cytokinin |
96%
Level 1: 80%+
Hints
Match the hormone with its physiological effect:
Codes:
1. A-4, B-3, C-2, D-1
2. A-1, B-2, C-4, D-3
3. A-3, B-4, C-1, D-2
4. A-2, B-1, C-3, D-4
| List-I (Hormone) |
List-II (Effect) |
||
| A. | Auxin | 1. | Delay senescence |
| B. | Cytokinin | 2. | Apical dominance |
| C. | Gibberellin | 3. | Bolting |
| D. | Abscisic acid | 4. | Dormancy |
1. A-4, B-3, C-2, D-1
2. A-1, B-2, C-4, D-3
3. A-3, B-4, C-1, D-2
4. A-2, B-1, C-3, D-4
Subtopic: Growth Hormones & Auxin | Gibberellin | Cytokinin | Abscisic Acid |
95%
Level 1: 80%+
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Match each item in Column I with one in Column II and select the correct match from the codes given:
Codes:
| Column I [PGR] |
Column II [Scientist] |
||
| A | Auxin | P | E. Kurosawa |
| B | Cytokinin | Q | F. W. Went |
| C | Gibberellin | R | H. H. Cousins |
| D | Ethylene | S | Skoog and Miller |
| A | B | C | D | |
| 1. | S | Q | R | P |
| 2. | Q | S | P | R |
| 3. | P | R | S | Q |
| 4. | R | P | Q | S |
Subtopic: Growth Hormones & Auxin | Gibberellin | Cytokinin |
94%
Level 1: 80%+
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Which of the following PGR is present in coconut milk which is used in tissue culture?
| 1. | Cytokinin | 2. | Auxin |
| 3. | Gibberellin | 4. | Ethylene |
Subtopic: Cytokinin |
93%
Level 1: 80%+
AIPMT - 2000
Hints
Match each item in Column I with one item in Column II and select the best match from the codes given:
Codes:
| Column I | Column II | ||
| A. | Auxin | P. | Promotes cell division |
| B. | Cytokinin | Q. | Promotes cell elongation |
| C. | Abscisic Acid | R. | Induces dormancy |
| D. | Ethylene | S. | Promotes fruit ripening |
| A | B | C | D | |
| 1. | S | R | P | Q |
| 2. | P | Q | S | R |
| 3. | Q | P | R | S |
| 4. | R | S | Q | P |
Subtopic: Growth Hormones & Auxin | Cytokinin | Ethylene | Abscisic Acid |
93%
Level 1: 80%+
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Match the following columns and select the correct option.
| A. | IAA | i. | Herring sperm DNA |
| B. | ABA | ii. | Bolting |
| C. | Ethylene | iii. | Stomatal closure |
| D. | GA | iv. | Weed-free lawns |
| E. | Cytokinin | v. | Ripening of fruits |
| 1. | A-iv, B-iii, C-v, D-ii, E-i |
| 2. | A-v, B-iii, C-iv, D-ii, E-i |
| 3. | A-iv, B-i, C-v, D-iii, E-ii |
| 4. | A-v, B-iii, C-ii, D-i, E-iv |
Subtopic: Gibberellin | Cytokinin | Ethylene | Abscisic Acid |
93%
Level 1: 80%+
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Miller and his co-workers (1954) isolated and purified the cell division substance in crystallised form from autoclaved herring fish sperm DNA. This active compound was a:
1. Cytokinin
2. Gibberellin
3. Inhibin
4. Auxin
1. Cytokinin
2. Gibberellin
3. Inhibin
4. Auxin
Subtopic: Cytokinin |
93%
Level 1: 80%+
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Match the following plant hormones with their primary functions:
| Column I | Column II | ||
| 1 | Cytokinins | A | Stimulates fruit ripening |
| 2 | Abscisic acid | B | Inhibits shoot growth and promotes seed dormancy |
| 3 | Ethylene | C | Promotes cell division in plant tissues |
| 4 | Gibberellins | D | Stimulates growth and elongation of stems and leaves |
| 1. | 1-C, 2-B, 3-D, 4-A |
| 2. | 1-D, 2-C, 3-B, 4-A |
| 3. | 1-B, 2-D, 3-C, 4-A |
| 4. | 1-C, 2-B, 3-A, 4-D |
Subtopic: Gibberellin | Cytokinin | Ethylene | Abscisic Acid |
93%
Level 1: 80%+
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Coconut water [milk] contains the Plant Growth Regulator:
| 1. | ABA | 2. | Auxin |
| 3. | Cytokinin | 4. | Gibberellin |
Subtopic: Cytokinin |
90%
Level 1: 80%+
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