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Q. No.Seed germination is inhibited by ABA in antagonism with:
1. Auxins
2. Ethylene
3. Kinetins
4. GAs
Subtopic: Gibberellin | Abscisic Acid |
85%
From NCERT
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Consider the two statements:
| Assertion (A): | The most widely used compound as source of ethylene is ethephon. |
| Reason (R): | Ethephon in an aqueous solution is readily absorbed and transported within the plant and releases ethylene slowly. |
| 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: Ethylene |
82%
From NCERT
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Consider the given two statements:
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
| 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: Cytokinin |
75%
From NCERT
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Parthenocarpy in tomatoes can be induced by the application of:
| 1. | Auxins | 2. | Gibberellins |
| 3. | Ethylene | 4. | Kinetins |
Subtopic: Growth Hormones & Auxin |
90%
From NCERT
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Which PGR, although can be included in the group of both growth promoters and growth inhibitors in plants, is largely an inhibitor of growth activities?
1. Auxins
2. Gibberellins
3. Ethylene
4. Abscisic acid
1. Auxins
2. Gibberellins
3. Ethylene
4. Abscisic acid
Subtopic: Gibberellin |
87%
From NCERT
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Consider the given two statements:
| Assertion (A): | Plant growth is intimately linked to the water status of the plant while development is not. |
| Reason (R): | The plant cells grow in size by cell enlargement which in turn requires water. |
| 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: Growth |
50%
From NCERT
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The exponential growth can be expressed as:
1. W1 = W0 ert
2. W1 = W0 + ert
3. W1 = W0 – ert
4. W1 = W0/ ert
1. W1 = W0 ert
2. W1 = W0 + ert
3. W1 = W0 – ert
4. W1 = W0/ ert
Subtopic: Growth Model |
93%
From NCERT
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Consider the given two statements:
| Assertion (A): | Plants retain the capacity for unlimited growth throughout their life. |
| Reason (R): | Meristems are present at certain locations in plant body. |
| 1. | Both (A) and (R) are True and (R) correctly explains the (A). |
| 2. | Both (A) and (R) are True but (R) does not correctly explain the (A). |
| 3. | (A) is True; (R) is False. |
| 4. | (A) is False; (R) is True. |
Subtopic: Growth | Growth Terminology | Development |
86%
From NCERT
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Growth in plants:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | can be defined as an irreversible permanent increase in size of an organ or its parts or even of an individual cell. |
| II: | is accompanied by metabolic processes, only anabolic and not catabolic, that occur at the expense of energy. |
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Growth | Growth Terminology |
85%
From NCERT
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Consider the given two statements:
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 incorrect
4. Statement I is incorrect; Statement II is correct
| Statement I: | Development in plants is the sum of two processes: growth and differentiation. |
| Statement II: | The development of a mature plant from a zygote (fertilised egg) follows a precise and highly ordered succession of events. |
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 incorrect
4. Statement I is incorrect; Statement II is correct
Subtopic: Growth |
92%
From NCERT
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