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Q. No.Given below are two statements:
Assertion (A):
Plant growth is open and indeterminate.
Reason (R):
Plants retain the capacity for unlimited growth throughout their life.
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: Growth |
83%
Level 1: 80%+
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Given below are two statements:
| Assertion (A): | Spraying sugarcane crops with gibberellins increases the length of the stem. |
| Reason (R): | Sugarcane yield decreases as much as 20 tonnes per acre by spraying gibberellins. |
| 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: Gibberellin |
70%
Level 2: 60%+
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Given below are two statements:
| Assertion (A): | Spraying juvenile conifers with GAs hastens the maturity period. |
| Reason (R): | GAs lead to early seed production in conifers. |
| 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: Gibberellin |
80%
Level 1: 80%+
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Given below are two statements:
| Assertion (A): | Ethylene helps the plants to increase their absorption surface. |
| Reason (R): | Ethylene promotes root growth and root hair formation. |
| 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: Ethylene |
82%
Level 1: 80%+
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Given below are two statements:
| Assertion (A): | Ethylene is one of the most widely used PGR in agriculture. |
| Reason (R): | Ethylene regulates many physiological processes of plants. |
| 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: Ethylene |
88%
Level 1: 80%+
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Given below are two statements:
| Assertion (A): | Ethylene helps to increase the number of fruits in cucumber. |
| Reason (R): | Ethylene promotes the production of both male and female flowers on the same tree. |
| 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: Ethylene |
68%
Level 2: 60%+
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"Cells positioned away from root apical meristem differentiate as root cap cells, while those pushed to the periphery mature as epidermis". This is evidence for
1. Open form of differentiation in plants
2. Closed form of differentiation in plants
3. Closed form dedifferentiation in plants
4. Open form of dedifferentiation in plants
1. Open form of differentiation in plants
2. Closed form of differentiation in plants
3. Closed form dedifferentiation in plants
4. Open form of dedifferentiation in plants
Subtopic: Growth | Differentiation, Dedifferentiation and Redifferentiation |
75%
Level 2: 60%+
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Vernalisation is:
1. Low pH treatment
2. Low temperature treatment
3. High temperature treatment
4. High pH treatment
1. Low pH treatment
2. Low temperature treatment
3. High temperature treatment
4. High pH treatment
87%
Level 1: 80%+
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Which one of the following generally acts as an antagonist to gibberellins?
1. Zeatin
2. Ethylene
3. ABA
4. IAA
1. Zeatin
2. Ethylene
3. ABA
4. IAA
Subtopic: Abscisic Acid |
91%
Level 1: 80%+
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Subtopic: Growth Hormones & Auxin |
83%
Level 1: 80%+
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