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Q. No.
Subtopic: FLOWER – A FASCINATING ORGAN OF ANGIOSPERMS |
57%
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Consider the given two statements:
| Statement I: | The majority of flowering plants produce hermaphrodite flowers. |
| Statement II: | The majority of flowering plants have a well-developed gametophyte and poorly developed sporophyte. |
| 1. | Statement I is correct; Statement II is correct |
| 2. | Statement I is correct; Statement II is incorrect |
| 3. | Statement I is incorrect; Statement II is incorrect |
| 4. | Statement I is incorrect; Statement II is correct |
Subtopic: Post Pollination Events |
75%
From NCERT
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Consider the given two statements:
| Statement I: | Monoecy prevents autogamy but not geitonogamy. |
| Statement II: | Dioecy prevents both autogamy and geitonogamy. |
| 1. | Statement I is correct; Statement II is correct |
| 2. | Statement I is correct; Statement II is incorrect |
| 3. | Statement I is incorrect; Statement II is incorrect |
| 4. | Statement I is incorrect; Statement II is correct |
Subtopic: Post Pollination Events |
73%
From NCERT
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In artificial hybridization experiments:
| I: | If the female parent bears bisexual flowers, removal of anthers from the flower bud before the anther dehisces using a pair of forceps is necessary. |
| II: | If the female parent produces unisexual flowers, there is no need for emasculation. |
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: Post Pollination Events |
94%
From NCERT
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Seeds offer several advantages to angiosperms including:
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II, and III are correct
| I: | Seed formation is more dependable. |
| II: | They have sufficient food reserves. |
| III: | They generate new genetic combinations leading to variations. |
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II, and III are correct
Subtopic: Seed |
76%
From NCERT
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Consider the given two statements:
| Assertion (A): | The innermost layer of the wall of microsporangium is critical for the pollen grains in angiosperms. |
| Reason (R): | Cells of this layer possess dense cytoplasm and generally have more than one nucleus. |
| 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. | Both (A) and (R) are False |
Subtopic: Stamen: Microsporangium |
55%
From NCERT
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Consider the given two statements:
| Assertion (A): | In majority of the flowering plants, the method of embryo sac formation is called as monosporic development. |
| Reason (R): | In majority of the flowering plants, one of the megaspores is functional while the other three degenerate. |
| 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. | Both (A) and (R) are False |
Subtopic: Pistil: Ovule | Pistil: Female Gametophyte |
88%
From NCERT
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Parthenium hysterophorus:
1. I, II, III and IV are correct
2. Only I, II, and III are correct
3. Only I, III and IV are correct
4. Only II, III and IV are correct
| I: | is also called carrot grass. |
| II: | came to India as a contaminant with imported rice. |
| III: | has become invasive in India. |
| IV: | causes pollen allergy. |
1. I, II, III and IV are correct
2. Only I, II, and III are correct
3. Only I, III and IV are correct
4. Only II, III and IV are correct
Subtopic: Stamen: Male Gametophyte |
69%
From NCERT
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How many of the given statements are correct?
| I: | Pollens of wheat and rice remain viable for months. |
| II: | Pollens of plants of Rosaceae family lose viability within 30 minutes. |
| III: | The number of ovules in the ovary of wheat, paddy and mango is one. |
| IV: | There are many ovules in the ovary of papaya, watermelon and orchids. |
| 1. | 1 | 2. | 2 |
| 3. | 3 | 4. | 4 |
Subtopic: Stamen: Male Gametophyte |
79%
From NCERT
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The number of successive mitotic division(s) that the functional megaspore undergoes to produce the
embryo sac in angiosperms is:
embryo sac in angiosperms is:
| 1. | 1 | 2. | 2 |
| 3. | 3 | 4. | 4 |
Subtopic: Pistil: Female Gametophyte |
79%
From NCERT
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