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Q. No.
Assertion (A):
Differentiation in plants is open.
Reason (R):
The cells/tissues arising out of the same meristem have different structures at maturity.
Choices for Assertions and reasons:
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.
(A) is false, but (R) is true.
Subtopic: Differentiation, Dedifferentiation and Redifferentiation |
65%
Level 2: 60%+
Hints
Assertion(A): Winter varieties of wheat are planted in autumn.
Reason(R): Winter varieties if planted in spring would normally fail to flower within a span of a flowering season.
Choices for Assertions and reasons:
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. (A) is false, but (R) is true.
Reason(R): Winter varieties if planted in spring would normally fail to flower within a span of a flowering season.
Choices for Assertions and reasons:
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. (A) is false, but (R) is true.
76%
Level 2: 60%+
Hints
| Assertion (A): | Growth is measured by a variety of parameters like an increase in fresh weight, dry weight, length, area, volume, and cell number. |
| Reason (R): | These quantities are proportional to protoplasm. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A) |
| 2. | Both (A) and (R) are True but (R) does not correctly explains (A) |
| 3. | (A) is True but (R) is False |
| 4. | Both (A) and (R) are False |
Subtopic: Growth |
Level 3: 35%-60%
Hints
| Assertion(A): | ABA is one of the most widely used PGRs in agriculture. |
| Reason(R): | Ethylene regulates many physiological processes. |
| 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. | (A) is false, but (R) is true. |
Subtopic: Ethylene | Abscisic Acid |
74%
Level 2: 60%+
Hints
Assertion(A): The development of plants could be flexible.
Reason(R): Differentiation in plants is closed.
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. (A) is false, but (R) is true.
Reason(R): Differentiation in plants is closed.
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. (A) is false, but (R) is true.
86%
Level 1: 80%+
Hints
| Assertion (A): | Expansion of leaf is growth. |
| Reason (R): | Growth is reversible permanent increase in size of an organ or its parts. |
| 1. | Both (A) and (R) are true and (A) 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. | (A) is false, but (R) is true. |
Subtopic: Growth |
83%
Level 1: 80%+
Hints
| Assertion (A): | Growth, at an organ level, is principally a consequence of the increase in the amount of protoplasm. |
| Reason (R): | The increase in protoplasm is difficult to measure directly. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A) |
| 2. | Both (A) and (R) are True but (R) does not correctly explains (A) |
| 3. | (A) is True but (R) is False |
| 4. | Both (A) and (R) are False |
Subtopic: Growth |
Level 3: 35%-60%
Hints
| Assertion(A): | ABA is called stress hormones. |
| Reason(R): | ABA stimulates the opening of the stomata. |
| 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. | (A) is false, but (R) is true. |
Subtopic: Abscisic Acid |
82%
Level 1: 80%+
Hints
Which of the following plant parts perceives the photoperiod in plants?
1. meristem
2. flower
3. floral buds
4. leaves
1. meristem
2. flower
3. floral buds
4. leaves
84%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
Apical dominance in plants can be overcome by the application of the PGR:
| 1. | Cytokinin | 2. | Ethylene |
| 3. | ABA | 4. | Gibberellins |
Subtopic: Cytokinin |
86%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
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