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Q. No.The given diagram shows a mature dehisced anther.
Statement I:
This process is coordinated precisely with pollen differentiation, floral development, and flower opening.
Statement II:
Anther dehiscence is the final function of the anther that causes the release of pollen grains.
1.
Both Statement I and Statement II are True and Statement II is the correct explanation of Statement I.
2.
Both Statement I and Statement II are True but Statement II is not the correct explanation of Statement I.
3.
Statement I is True but Statement II is False.
4.
Statement I is False but Statement II is True.
Subtopic: Stamen: Microsporangium |
51%
From NCERT
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Regarding the given diagram:
| Statement I: | It shows a pollen tetrad. |
| Statement II: | The four microspores are contained by callose walls. |
| 1. | Statement I is correct, Statement II is correct. |
| 2. | Statement I is incorrect, Statement II is correct. |
| 3. | Statement I is correct, Statement II is incorrect. |
| 4. | Statement I is incorrect, Statement II is incorrect. |
Subtopic: Stamen: Male Gametophyte |
79%
From NCERT
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Study the stages of maturation of microspore into a pollen grain and select the correct statements:
| Statement I: | The spindle formation as seen in A is strictly symmetric. |
| Statement II: | The larger cell [B] is the generative cell and the smaller cell [C] is the vegetative cell. |
| 1. | Statement I is correct, Statement II is correct |
| 2. | Statement I is incorrect, Statement II is correct |
| 3. | Statement I is correct, Statement II is incorrect |
| 4. | Statement I is incorrect, Statement II is incorrect |
Subtopic: Stamen: Male Gametophyte |
69%
From NCERT
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Match each item in Table I with one in Table II and select the correct match from the codes given:
Codes:
| Table I: | ||
| A. | B. | C. |
 |
 |
 |
| Table II | |
| P. | A dissected flower of Hibiscus showing pistil where other floral parts have been removed |
| Q. | Multicarpellary, syncarpous pistil of Papaver |
| R. | Multicarpellary, apocarpous gynoecium of Michelia |
Codes:
| A | B | C | |
| 1. | P | Q | R |
| 2. | P | R | Q |
| 3. | Q | R | P |
| 4. | R | P | Q |
Subtopic: Pistil: Female Gametophyte |
91%
From NCERT
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Regarding part I of the diagram:
| Statement I: | A is the Chalazal end. |
| Statement II: | B is the microspore mother cell, C is the microspore dyad and D is the microspore tetrad. |
| 1. | Statement I is correct, Statement II is correct |
| 2. | Statement I is incorrect, Statement II is correct |
| 3. | Statement I is correct, Statement II is incorrect |
| 4. | Statement I is incorrect, Statement II is incorrect |
Subtopic: Pistil: Ovule |
From NCERT
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Regarding part II of the diagram:
| Statement I: | It shows the two, four, and eighth nucleate stages of the embryo sac. |
| Statement II: | The divisions are mitotic and free nuclear. |
| 1. | Statement I is correct, Statement II is correct |
| 2. | Statement I is incorrect, Statement II is correct |
| 3. | Statement I is correct, Statement II is incorrect |
| 4. | Statement I is incorrect, Statement II is incorrect |
Subtopic: Pistil: Ovule |
92%
From NCERT
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Regarding part III of the diagram:
The correct statements are:
| Statement I: | It represents mature embryosac or the female gametophyte in an angiosperm. |
| Statement II: | A is the micropylar end and B is the Chalazal end |
| Statement III: | C guides the entry of the pollen tube into the embryo sac. |
| Statement IV: | D is the polar nuclei and E is the central cell. |
| Statement V: | F is the egg cell. |
| Statement VI: | G is the antipodals and H is special cellular thickenings. |
The correct statements are:
| 1. | Statement I, Statement IV, and Statement VI |
| 2. | Statement II, Statement III, Statement IV and Statement VI |
| 3. | Statement I, Statement IV, and Statement V |
| 4. | All Statements are correct |
Subtopic: Pistil: Ovule |
85%
From NCERT
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The diagram of NCERT given below shows two types of flowers in a certain plant:
| Statement I: | Cleistogamous flowers have an advantage and a disadvantage over chasmogamous flowers. |
| Statement II: | Seed set is assured even in the absence of pollinators but the amount of genetic variations is less in cleistogamous flowers when compared to the chasmogamous flowers. |
| 1. | Statement I is correct; Statement II is correct but Statement II does not explain Statement I. |
| 2. | Statement I is correct; Statement II is correct and Statement II explains Statement I. |
| 3. | Statement I is correct but Statement II is not correct. |
| 4. | Both Statement I and Statement II are not correct. |
Subtopic: Pollination & Outbreeding Devices |
83%
From NCERT
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The plant shown in the given diagram is most likely to be pollinated by:
| 1. | Water | 2. | Wind |
| 3. | Bees | 4. | Bats |
Subtopic: Pollination & Outbreeding Devices |
93%
From NCERT
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The diagram shows:
1. Pollination by water in Vallisneria
2. Pollination by water in Zostera
3. Pollination by wind in Water hyacinth
4. Pollination by the wind in Water lily
1. Pollination by water in Vallisneria
2. Pollination by water in Zostera
3. Pollination by wind in Water hyacinth
4. Pollination by the wind in Water lily
Subtopic: Pollination & Outbreeding Devices |
83%
From NCERT
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