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Q. No.In angiosperms, the pollen tub, carrying male gametes, enters into the embryo sac through the:
1.
chalaza
2.
nucellus
3.
micropyle
4.
funiculus
Subtopic: Pollen - Pistil Interaction |
91%
Level 1: 80%+
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It is possible to store pollen grains of a large number of species for years in liquid nitrogen at:
1. 0°C
2. 4°C
3. -196°C
4. -273°C
1. 0°C
2. 4°C
3. -196°C
4. -273°C
Subtopic: Stamen: Male Gametophyte |
97%
Level 1: 80%+
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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%
Level 2: 60%+
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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 |
84%
Level 1: 80%+
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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 |
53%
Level 3: 35%-60%
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What is the function of the ears 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 |
79%
Level 2: 60%+
NEET - 2023
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
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NEET 2026 - Target Batch - Vital
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 |
82%
Level 1: 80%+
NEET - 2023
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NEET 2026 - Target Batch - Vital
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NEET 2026 - Target Batch - Vital
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 |
89%
Level 1: 80%+
NEET - 2023
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
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NEET 2026 - Target Batch - Vital
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 |
84%
Level 1: 80%+
NEET - 2023
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
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NEET 2026 - Target Batch - Vital
Transfer of pollen grains from anther to stigma of another flower of same plant is known as:
| 1. | Geitonogamy | 2. | Xenogamy |
| 3. | Autogamy | 4. | Cleistogamy |
Subtopic: Pollination & Outbreeding Devices |
88%
Level 1: 80%+
NEET - 2023
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
Hints
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NEET 2026 - Target Batch - Vital
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