- 1(current)
Q. No.Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
In the light of the above statements choose the correct answer from the options given below:
| Assertion (A): | Spraying sugarcane crops with gibberellins increase the yield by as much as 20 tonnes per acre. |
| Reason (R): | Sugarcane stores carbohydrates such as sugar in their stems. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Â Gibberellin |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
In most seeds, the ratio of which of the following pair of PGRs determines whether the embryo remains dormant or germinates?
| 1. | ABA and GA | 2. | Auxin and Cytokinin |
| 3. | Auxin and GA | 4. | ABA and Cytokinin |
Subtopic: Â Gibberellin |Â Abscisic Acid |
 60%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
It is thought that the selective breeding (albeit unconscious) of crop strains that were the key drivers of the "green revolution" in the 1960s were deficient in the synthesis of:
1. ABA
2. Gibberellins
3. Auxins
4. Cytokinins
Subtopic: Â Gibberellin |
 52%
Please attempt this question first.
Hints
Match the following plant growth regulators with their functions as given in NCERT:
Options:
1. 1-B, 2-C, 3-A
2. 1-C, 2-A, 3-B
3. 1-A, 2-B, 3-C
4. 1-B, 2-A, 3-C
| Column A | Column B | ||
| 1. | Auxins | A. | Stimulate cell division and growth of lateral buds |
| 2. | Cytokinins | B. | Promote stem elongation and fruit growth |
| 3. | Gibberellins | C. | Promote cell enlargement and stem elongation |
1. 1-B, 2-C, 3-A
2. 1-C, 2-A, 3-B
3. 1-A, 2-B, 3-C
4. 1-B, 2-A, 3-C
Subtopic: Â Auxin Function |Â Gibberellin |Â Cytokinin |
 57%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Given below are two statements:
In light of the above statements, choose the most appropriate answer from the options given below:
| Statement I: | Cytokinins help to initiate rooting in stem cuttings during plant propagation. |
| Statement II: | In most cases, ABA acts as a synergist to Gibberellins. |
| 1. | Statement I is correct but Statement II is incorrect. |
| 2. | Statement I is incorrect but Statement II is correct. |
| 3. | Both Statement I and Statement II are correct. |
| 4. | Both Statement I and Statement II are incorrect |
Subtopic: Â Growth Hormones & Auxin |Â Gibberellin |Â Cytokinin |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
To promote stem elongation, gibberellins act in concert with:
| 1. | Auxins | 2. | Cytokinins |
| 3. | Ethylene | 4. | ABA |
Subtopic: Â Growth Hormones & Auxin |Â Auxin Function |Â Gibberellin |
From NCERT
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
Hints
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
- 1(current)
Q. No.
© 2025 GoodEd Technologies Pvt. Ltd.