Consider the two given statements:
Statement I:
Gynoecium of Papaver is multicarpellary and apocarpous.
Statement II:
Gynoecium of Michelia is multicarpellary and syncarpous.
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: Pistil: Ovule | Pistil: Female Gametophyte |
79%
From NCERT
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Regarding double fertilization in angiosperms:
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: | syngamy requires one male gamete and one egg cell |
| II: | triple fusion requires one male gamete, one egg cell and one polar nucleus |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Double Fertilization |
83%
From NCERT
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A typical angiosperm anther in transverse section will show:
| 1. | two lobes, each lobe having two theca and each theca having two microsporangia |
| 2. | two lobes, each lobe having two theca and each theca having four microsporangia |
| 3. | two lobes, each lobe having two theca and each lobe having two microsporangia |
| 4. | two lobes, each lobe having two theca and each lobe having four microsporangia |
Subtopic: Stamen: Anther |
52%
From NCERT
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Identify the correct statement related to Pollination:
| 1. | Water is the most important pollinating agent for angiosperms |
| 2. | Pollination by water is seen in all aquatic flowering plants |
| 3. | Pollination by wind is more common amongst abiotic pollination |
| 4. | Very few flowers are pollinated by insects |
Subtopic: Pollination & Outbreeding Devices |
93%
From NCERT
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Which one of the following statements is true?
| 1. | Exine of pollen grains is made up of cellulose and pectin |
| 2. | Pollen grains of many species cause severe allergies |
| 3. | Pollens cannot be stored in liquid nitrogen |
| 4. | Tapetum helps in the dehiscence of anther |
Subtopic: Stamen: Male Gametophyte |
88%
From NCERT
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Both autogamy and geitonogamy are prevented in:
1. Monoecy
2. Dioecy
3. Chasmogamy
4. Cleistogamy
1. Monoecy
2. Dioecy
3. Chasmogamy
4. Cleistogamy
Subtopic: Pollination & Outbreeding Devices |
84%
From NCERT
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What is the function of tassels in the corn cob?
| 1. | To protect seeds | 2. | To attract insects |
| 3. | To trap pollen grains | 4. | To disperse pollen grains |
Subtopic: Pollination & Outbreeding Devices |
78%
From NCERT
NEET - 2023
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In angiosperm, the haploid, diploid and triploid structures of a fertilized embryo sac sequentially are :
| 1. | Synergids, antipodals and Polar nuclei |
| 2. | Synergids, Primary endosperm nucleus and zygote |
| 3. | Antipodals, synergids, and primary endosperm nucleus |
| 4. | Synergids, Zygote and Primary endosperm nucleus |
Subtopic: Double Fertilization |
80%
From NCERT
NEET - 2023
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Large, colorful, fragrant flowers with nectar are seen in:
| 1. | wind pollinated plants | 2. | insect pollinated plants |
| 3. | bird pollinated plants | 4. | bat pollinated plants |
Subtopic: Pollination & Outbreeding Devices |
88%
From NCERT
NEET - 2023
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In which of the following sets of families, the pollen grain are viable for months?
1. Solanaceae, Poaceae and Liliaceae
2. Brassicaceae, Liliaceae and Poaceae
3. Rosaceae, Liliaceae and Poaceae
4. Leguminosae, Solanaceae and Rosaceae
1. Solanaceae, Poaceae and Liliaceae
2. Brassicaceae, Liliaceae and Poaceae
3. Rosaceae, Liliaceae and Poaceae
4. Leguminosae, Solanaceae and Rosaceae
Subtopic: Stamen: Microsporangium | Stamen: Male Gametophyte |
83%
From NCERT
NEET - 2023
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