- 1(current)
Q. No.The plant hormone __________ delays senescence, whereas the plant hormone promotes senescence.
1. cytokinin; auxin
2. auxin; cytokinin
3. cytokinin; ethylene
4. abscisic acid; ethylene
1. cytokinin; auxin
2. auxin; cytokinin
3. cytokinin; ethylene
4. abscisic acid; ethylene
Subtopic: Â Cytokinin |Â Ethylene |
 74%
From NCERT
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Match List-I with List-II
Choose the correct answer from the options given below:
| List-I | List-II | ||
| (A) | Auxin | (I) | Promotes female flower formation in cucumber |
| (B) | Gibberellin | (II) | Overcoming apical dominance |
| (C) | Cytokinin | (III) | Increase in the length of grape stalks |
| (D) | Ethylene | (IV) | Promotes flowering in pineapple |
Choose the correct answer from the options given below:
| Options: | (A) | (B) | (C) | (D) |
| 1. | II | I | IV | III |
| 2. | IV | III | II | I |
| 3. | I | III | IV | II |
| 4. | III | II | I | IV |
Subtopic: Â Auxin Function |Â Gibberellin |Â Cytokinin |Â Ethylene |
 86%
From NCERT
NEET - 2023
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NEET 2025 - Target Batch
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NEET 2025 - Target Batch
You are given a tissue with its potential for differentiation in an artificial culture. Which of the following pairs of hormones would you add to the medium to secure shoots as well as roots?
1. IAA and gibberellin
2. Auxin and cytokinin
3. Auxin and abscisic acid
4. Gibberellin & abscisic acid
Subtopic: Â Auxin Function |Â Cytokinin |
 84%
From NCERT
NEET - 2016
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NEET 2025 - Target Batch
Hints
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NEET 2025 - Target Batch
Consider the two statements:
| Assertion (A): | Gibberellins are used to increase the length of grape stalks. |
| Reason (R): | Gibberellins help overcome apical dominance. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A). |
| 3. | (A) is True; (R) is False. |
| 4. | (A) is False; (R) is True. |
Subtopic: Â Gibberellin |Â Cytokinin |
 80%
From NCERT
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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: Â Cytokinin |
 75%
From NCERT
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Natural cytokinins are synthesised in all the following regions in a plant except:
1. Root apices
2. Developing shoot buds
3. Young fruits
4. Senescent organs
1. Root apices
2. Developing shoot buds
3. Young fruits
4. Senescent organs
Subtopic: Â Cytokinin |
 87%
From NCERT
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