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Q. No.
Assertion (A):
Nocturnal flowers are pollinated by moths.
Reason (R):
Nocturnal flowers are highly fragrant and dull in colour
In the following questions a statement of assertion (A) is followed by a statement of reason (R).
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%
From NCERT
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Subtopic: Pollination & Outbreeding Devices |
93%
From NCERT
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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%
From NCERT
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Double fertilization in flowering plants
A. One of the male gametes moves towards the egg cell and fuses with its nucleus thus completing syngamy
B. And develop the endosperm
C. Results in the formation of a diploid cell, zygote
D. The other male gamete moves towards the two pollen nuclei located in the central cell and fused with to produce PEN
E. Syngamy and triple fusion takes place in the embryo sac
Choose the correct answer from the options given below:
1. A, B, D, E only
2. A, C, D, E only
3. A & D only
4. A, C, D only
A. One of the male gametes moves towards the egg cell and fuses with its nucleus thus completing syngamy
B. And develop the endosperm
C. Results in the formation of a diploid cell, zygote
D. The other male gamete moves towards the two pollen nuclei located in the central cell and fused with to produce PEN
E. Syngamy and triple fusion takes place in the embryo sac
Choose the correct answer from the options given below:
1. A, B, D, E only
2. A, C, D, E only
3. A & D only
4. A, C, D only
Subtopic: Double Fertilization |
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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 |
89%
From NCERT
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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%
From NCERT
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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 |
88%
From NCERT
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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 |
90%
From NCERT
NEET - 2022
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NEET 2025 - Target Batch
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NEET 2025 - Target Batch
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%
From NCERT
NEET - 2022
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NEET 2025 - Target Batch
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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 |
80%
From NCERT
NEET - 2022
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NEET 2025 - Target Batch
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