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Q. No.
Assertion (A):
Apomixis is a form of asexual reproduction that mimics sexual reproduction.
Reason (R):
Apomixis involves the production of seeds, similar to sexual reproduction.
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: Apomixis & Polyembryony |
70%
From NCERT
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Consider the given two statements:
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 correct
4. Statement I is incorrect; Statement II is incorrect
| Statement I: | Megasporogenesis is formation of the megaspores in the megasporangium (nucellus) by meiosis. |
| Statement II: | Megagametogenesis is development of the megaspore into the megagametophyte which contains the gametes. |
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 correct
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Pistil: Female Gametophyte |
55%
From NCERT
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What floral award is provided by Amorphophallus for its pollinating agent?
1. Nectar
2. Secondary metabolites
3. Safe place to lay eggs
4. Protein rich pollens
1. Nectar
2. Secondary metabolites
3. Safe place to lay eggs
4. Protein rich pollens
Subtopic: Pollination & Outbreeding Devices |
92%
From NCERT
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Which cells in the embryosac of angiosperms degenerate after fertilization?
1. Antipodal and primary endosperm cell
2. Synergids and primary endosperm cell
3. Synergids and antipodals
4. Egg and antipodals
1. Antipodal and primary endosperm cell
2. Synergids and primary endosperm cell
3. Synergids and antipodals
4. Egg and antipodals
Subtopic: Pistil: Female Gametophyte |
94%
From NCERT
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In corn seed, the radicle is enclosed in a
1. scutellum
2. coleorrhiza
3. aleurone
4. coleoptile
1. scutellum
2. coleorrhiza
3. aleurone
4. coleoptile
Subtopic: Embryo |
91%
From NCERT
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Consider the two statements:
| Assertion (A): | Flowering plants have evolved adaptations to promote cross pollination. |
| Reason (R): | Most angiosperms are dioeceous plants. |
| 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: Pollination & Outbreeding Devices |
From NCERT
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Long, ribbon-like pollen grains are characteristically seen in some:
1. aquatic plants
2. bird-pollinated grasses
3. gymnosperms
4. wind-pollinated flowers
1. aquatic plants
2. bird-pollinated grasses
3. gymnosperms
4. wind-pollinated flowers
Subtopic: Pollination & Outbreeding Devices |
78%
From NCERT
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What will be the ploidy of the endosperm in an angiosperm produced as a result of a cross between a tetraploid female plant and a diploid male plant?
1. Triploid
2. Tetraploid
3. Pentaploid
4. Hexaploid
1. Triploid
2. Tetraploid
3. Pentaploid
4. Hexaploid
Subtopic: Post Pollination Events | Double Fertilization | Endosperm |
61%
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Hints
Consider the given two statements:
| Statement I: | Both wind and water pollinated flowers are not very colourful and do not produce nectar. |
| Statement II: | Majority of insect-pollinated flowers are large, colourful, fragrant and rich in nectar. |
1. Statement I is correct; Statement II is correct
2. Statement I is incorrect; Statement II is correct
3. Statement I is correct; Statement II is incorrect
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Pollination & Outbreeding Devices |
95%
From NCERT
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Consider the given two statements:
| Assertion (A): | Geitonogamy does not provide the same advantages as cross-pollination. |
| Reason (R): | Geitonogamy is a type of pollination in plants where pollen is transferred from the anther of a flower to the stigma of another flower on the same plant. |
| 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: Pollination & Outbreeding Devices |
80%
From NCERT
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