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Q. No.Read the following statements and state them true (T) or False (F)
A.
Continued cross pollination of plants results in inbreeding depression.
B.
In members of Poaceae, the single cotyledon is called scutellum.
C.
Apple is a false fruit because it is developed only from the ovary.
A
B
C
1.
T
T
F
2.
T
F
T
3.
F
F
T
4.
F
T
F
Subtopic: Pollination & Outbreeding Devices |
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Level 2: 60%+
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Subtopic: Stamen: Male Gametophyte |
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Subtopic: Pollination & Outbreeding Devices |
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Subtopic: Stamen: Male Gametophyte |
97%
Level 1: 80%+
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In some organisms, karyokinesis is not followed by cytokinesis as a result of which multinucleate condition arises leading to the formation of syncytium. The perfect example for this is
1. appearance of a furrow in cell membrane.
2. liquid endosperm in coconut.
3. sexual reproduction.
4. fertilisation.
1. appearance of a furrow in cell membrane.
2. liquid endosperm in coconut.
3. sexual reproduction.
4. fertilisation.
Subtopic: Endosperm |
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Level 1: 80%+
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Identify the figure and select the correct option for the labellings A, B, C and D.
| A | B | C | D | |
| 1. | Coleorhiza | Shoot apex | Epiblast | Radicle |
| 2. | Scutellum | Coleoptile | Shoot apex | Coleorhiza |
| 3. | Coleoptile | Cotyledon | Epiblast | Radicle |
| 4. | Scutellum | Coleoptile | Epiblast | Coleorhiza |
Subtopic: Embryo |
72%
Level 2: 60%+
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Read the following statements and select the correct option w.r.t angiosperms for blanks A, B and C.
I. The body of ovule with funicle in the region called A .
II. Female gametophyte is also called B .
III. C plays an important role in guiding the pollen tube into synergids.
I. The body of ovule with funicle in the region called A .
II. Female gametophyte is also called B .
III. C plays an important role in guiding the pollen tube into synergids.
| A | B | C | |
| 1. | Hilum | Embryo | Antipodal cell |
| 2. | Nucellus | Ovary | Polar nuclei |
| 3. | Micropyle | Ovary | Filiform apparatus |
| 4. | Hilum | Embryo sac | Filiform apparatus |
Subtopic: Pistil: Ovule | Seed |
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Subtopic: Pollination & Outbreeding Devices |
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Given below are two statements:
| Assertion (A): | Cleistogamous flowers are invariably autogamous. |
| Reason (R): | Cleistogamous flowers never expose their sex organs, so there is no chance of cross pollination in these flowers. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Pollination & Outbreeding Devices |
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Level 1: 80%+
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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 |
77%
Level 2: 60%+
NEET - 2023
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NEET 2026 - Target Batch - Vital
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