Q. No.The structure that serves as a landing platform for pollen grains in a flower is known as the:
1. Ovary
2. Style
3. Stigma
4. Placenta
1. Ovary
2. Style
3. Stigma
4. Placenta
Subtopic: Pistil: Ovule |
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Level 1: 80%+
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Match the following structures with their function:
Options:
| List-I (Structure) |
List-II (Function) |
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| A. | Tapetum | I. | Nourishment and development of microspores |
| B. | Endothecium | II. | Pollen tube guidance |
| C. | Pollen grains | III. | Dehiscence of anther |
| D. | Synergids | IV. | Male gametophyte |
| 1. | A-I, B-II, C-III, D-IV | 2. | A-III, B-I, C-II, D-IV |
| 3. | A-I, B-III, C-IV, D-II | 4. | A-II, B-I, C-III, D-IV |
Subtopic: Stamen: Microsporangium | Stamen: Male Gametophyte | Pistil: Ovule |
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In a majority of flowering plants:
| I: | One of the megaspores is functional while the other three degenerate. |
| II: | Only the functional megaspore develops into the female gametophyte (embryo sac). |
| 1. | Only I is correct | 2. | Only II is correct |
| 3. | Both I and II are correct | 4. | Both I and II are incorrect |
Subtopic: Pistil: Ovule | Pistil: Female Gametophyte |
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Match the following parts of the ovule (List-I) with their correct descriptions (List-II):
Options:
| List-I (Ovule Parts) |
List-II (Description) |
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| A. | Micropyle | I. | Opening through which pollen tube enters |
| B. | Integuments | II. | Protective envelopes around nucellus |
| C. | Chalaza | III. | Basal part where nucellus and integuments meet |
| D. | Nucellus | IV. | Encloses embryo sac and provides nourishment |
| 1. | A-IV, B-I, C-III, D-II | 2. | A-III, B-I, C-II, D-IV |
| 3. | A-II, B-IV, C-I, D-III | 4. | A-I, B-II, C-III, D-IV |
Subtopic: Pistil: Ovule | Pollen - Pistil Interaction |
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Development and formation of pollen grains in anther of the stamen is known as :
1. microsporogenesis
2. fertilization
3. megasporogenesis
4. spermiogenesis
1. microsporogenesis
2. fertilization
3. megasporogenesis
4. spermiogenesis
Subtopic: Pistil: Ovule |
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The junction between ovule and funicle is represented by :
| 1. | Nucellus | 2. | Integument |
| 3. | Chalaza | 4. | Hilum |
Subtopic: Pistil: Ovule |
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Level 1: 80%+
NEET - 2024
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A pistil consists of
1. stigma, style, and stamen
2. anther and fi lament
3. sepal and petal
4. stigma, style, and ovary
1. stigma, style, and stamen
2. anther and fi lament
3. sepal and petal
4. stigma, style, and ovary
Subtopic: Pistil: Ovule | Pistil: Female Gametophyte |
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Consider the following statements regarding the structure of a typical angiosperm ovule:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | The ovule is a small structure attached to the placenta by means of a stalk called funicle. |
| II: | The body of the ovule fuses with the funicle in the region called the hilum. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Pistil: Ovule |
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Read the following statements and select the correct option for blanks A, B, and C.
I. The body of the ovule fuses with a 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 the ovule fuses with a 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 | Pistil: Female Gametophyte |
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Which of the following structure is not associated with megasporangium in angiosperms?
1. Integuments
2. Funicle
3. Micropyle
4. Tapetum
Subtopic: Pistil: Ovule |
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