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Q. No.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
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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 |
81%
Level 1: 80%+
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 |
90%
Level 1: 80%+
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 |
84%
Level 1: 80%+
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 |
88%
Level 1: 80%+
NEET - 2023
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The residual persistent part which forms the perisperm in the seeds of beet is :
1. Calyx
2. Endosperm
3. Nucellus
4. Integument
1. Calyx
2. Endosperm
3. Nucellus
4. Integument
Subtopic: Embryo | Seed |
79%
Level 2: 60%+
NEET - 2022
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To ensure that only the desired pollens fall on the stigma in artificial hybridization process:
Choose the correct answer from the options given below:
| a: | the female flower buds of plant producing unisexual flower need not be bagged. |
| b: | there is no need to emasculate unisexual flowers of selected female parent. |
| c: | emasculated flowers are to be bagged immediately after cross pollination. |
| d: | emasculated flowers are to be bagged after removal of anthers. |
| e: | bisexual flowers, showing protogyny are never selected for cross. |
| 1. | (a), (b) and (c) only | 2. | (b), (c) and (d) only |
| 3. | (b), (c) and (e) only | 4. | (a), (d) and (e) only |
Subtopic: Pollen - Pistil Interaction |
67%
Level 2: 60%+
NEET - 2022
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In general the egg apparatus of embryo sac in angiosperm consists of:
| 1. | One egg cell, two synergids |
| 2. | One egg cell, two synergids, two antipodal cells, three Polar nuclei |
| 3. | One egg cell, three synergids, two antipodal cells, two Polar nuclei |
| 4. | One egg cell, two synergids, two antipodal cells, two Polar nuclei |
Subtopic: Pistil: Female Gametophyte |
85%
Level 1: 80%+
NEET - 2022
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Which of the following set represents the correct labeling of A, B, C and D with respect to the given diagram?
| 1. | A- Seed Coat, B- Cotyledon, C- Endosperm, D - Hypocotyle |
| 2. | A -Seed Coat, B- Scutellum, C- Endocarp, D - Mesocarp |
| 3. | A- Seed Coat, B- Scutellum, C- Microphyle, D - Endocarp |
| 4. | A-Pericarp, B - Coleoptile |
Subtopic: Seed |
75%
Level 2: 60%+
NEET - 2022
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What will be the ploidy of endosperm of a seed produced after crossing tetraploid female plant with tetraploid male plant?
1. Pentaploid
2. Hexaploid
3. Diploid
4. Triploid
Subtopic: Endosperm |
56%
Level 3: 35%-60%
NEET - 2022
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