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Q. No.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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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 |
86%
From NCERT
NEET - 2023
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In angiosperms, the correct sequence of events leading to the formation of female gametophyte in the ovule is:
Choose the correct answer from the options given below:
| A. | 3 successive free nuclear divisions in functional megaspore. |
| B. | Degeneration of 3 megaspores |
| C. | Meiotic division in megaspore mother cell |
| D. | Migration of 3 nuclei towards each pole. |
| E. | Formation of a wall resulting in seven celled embryosac. |
Choose the correct answer from the options given below:
| 1. | (A), (B), (C), (D), (E) | 2. | (C), (E), (A), (D), (B) |
| 3. | (B), (C), (A), (D), (E) | 4. | (C), (B), (A), (D), (E) |
Subtopic: Pistil: Ovule | Pistil: Female Gametophyte |
76%
From NCERT
NEET - 2023
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