Q. No.Subtopic: Â Abscisic Acid |
 98%
Level 1: 80%+
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Subtopic: Â Abscisic Acid |
 97%
Level 1: 80%+
Hints
Subtopic: Â Abscisic Acid |
 97%
Level 1: 80%+
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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: Â Growth Hormones & Auxin |Â Gibberellin |Â Cytokinin |Â Abscisic Acid |
 95%
Level 1: 80%+
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During water stress, which plant growth hormone is responsible for causing the closure of stomata to avoid transpiration water loss?
| 1. | Ethylene | 2. | Auxins |
| 3. | ABA | 4. | Gibberellins |
Subtopic: Â Abscisic Acid |
 95%
Level 1: 80%+
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The hormone abscisic acid is primarily associated with:
| 1. | Cell elongation and phototropism |
| 2. | Breaking seed dormancy |
| 3. | Stomatal closure during water stress |
| 4. | Promotion of flowering in long-day plants |
Subtopic: Â Abscisic Acid |
 93%
Level 1: 80%+
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Match the following concerning the activity/function and the phytohormone involved:-
| (a) | Fruit ripener | (i) | Abscisic acid |
| (b) | Herbicide | (ii) | GA 3 |
| (c) | Bolting agent | (iii) | 2, 4-D |
| (d) | Stress hormone | (iv) | Ethephon |
Select the correct option from following:-
| (a) | (b) | (c) | (d) | |
| 1. | (ii) | (iii) | (iv) | (i) |
| 2. | (iii) | (iv) | (ii) | (i) |
| 3. | (iv) | (iii) | (ii) | (i) |
| 4. | (iv) | (ii) | (i) | (iii) |
Subtopic: Â Growth Hormones & Auxin |Â Gibberellin |Â Ethylene |Â Abscisic Acid |
 93%
Level 1: 80%+
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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: Â Growth Hormones & Auxin |Â Cytokinin |Â Ethylene |Â 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: Â Gibberellin |Â Cytokinin |Â Ethylene |Â Abscisic Acid |
 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: Â Gibberellin |Â Cytokinin |Â Ethylene |Â Abscisic Acid |
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Level 1: 80%+
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