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Q. No.Recent research has shown that pollination requires that carpels recognize pollen grains as "self or nonself." For self-incompatibility, the system requires
1. the rejection of nonself cells
2. the rejection of self cells.
3. carpel incompatibility with the egg cells.
4. that the flowers be incomplete.
Subtopic: Pollen - Pistil Interaction |
67%
Level 2: 60%+
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Which of the following is the correct sequence of events in a pollen sac?
| 1. | sporangia → meiosis → two haploid cells → meiosis → two pollen grains per cell |
| 2. | pollen grain → meiosis → two generative cells → two tube cells per pollen grain |
| 3. | two haploid cells → meiosis → generative cell → tube cell-fertilization → pollen grain |
| 4. | microsporocyte → meiosis → microspores → mitosis → two haploid cells per pollen grain |
Subtopic: Stamen: Microsporangium | Stamen: Male Gametophyte |
66%
Level 2: 60%+
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| Assertion (A): | Nocturnal flowers are pollinated by moths. |
| Reason (R): | Nocturnal flowers are highly fragrant and dull in colour |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A) |
| 2. | Both (A) and (R) are true and (R) is not the correct explanation of (A) |
| 3. | (A) is true, (R) is false |
| 4. | (A) is false and (R) is false |
Subtopic: Pollination & Outbreeding Devices |
51%
Level 3: 35%-60%
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NEET 2026 - Target Batch - Vital
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Subtopic: Pollination & Outbreeding Devices |
94%
Level 1: 80%+
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Which of the following is/are NOT developed from ovary?
A. Apple
B. Tomato
C. Mango
D. Coconut
E. Cashewnut
Choose the correct answer from the options given below:
1. A and B only
2. A only
3. A, C and D only
4. A and E only
A. Apple
B. Tomato
C. Mango
D. Coconut
E. Cashewnut
Choose the correct answer from the options given below:
1. A and B only
2. A only
3. A, C and D only
4. A and E only
Subtopic: Fruit |
78%
Level 2: 60%+
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Characteristics of wind-pollinated plants are
A. Well exposed stamens
B. Colorful flowers
C. Non-sticky pollen
D. Fragrant flowers
E. Flowers rich in nectar
Choose the correct answer from the option given below:
1. A & B only
2. A & C only
3. A, B & C only
4. C, D & E only
A. Well exposed stamens
B. Colorful flowers
C. Non-sticky pollen
D. Fragrant flowers
E. Flowers rich in nectar
Choose the correct answer from the option given below:
1. A & B only
2. A & C only
3. A, B & C only
4. C, D & E only
Subtopic: Pollination & Outbreeding Devices |
90%
Level 1: 80%+
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A typical embryo sac in Angiosperms at maturity is
1. 7 nucleate and 8 celled
2. 8 nucleate and 7 celled
3. 4 nucleate and 7 celled
4. 8 nucleate and 8 celled
1. 7 nucleate and 8 celled
2. 8 nucleate and 7 celled
3. 4 nucleate and 7 celled
4. 8 nucleate and 8 celled
Subtopic: Pistil: Female Gametophyte |
92%
Level 1: 80%+
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Triple fusion in angiosperms is the fusion of second sperm with
1. Antipodal cell and one synergid cell
2. Two antipodal cells
3. Two synergid cells
4. Two polar nuclei
1. Antipodal cell and one synergid cell
2. Two antipodal cells
3. Two synergid cells
4. Two polar nuclei
Subtopic: Double Fertilization |
89%
Level 1: 80%+
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In general the egg apparatus of embryo sac in angiosperm consists of:
| 1. | One egg cell, two synergids, three antipodal cells, two Polar nuclei |
| 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 |
89%
Level 1: 80%+
NEET - 2022
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NEET 2026 - Target Batch - Vital
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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:
1. (a), (b) and (c) only
2. (b), (c) and (d) only
3. (b), (c) and (e) only
4. (a), (d) and (e) only
| 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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NEET 2026 - Target Batch - Vital
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