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Q. No.The majority of water plants like water hyacinth and water lily are pollinated by:
1. Water 2. Wind 3. Insects 4. Both 2 and 3
Subtopic: Pollination & Outbreeding Devices |
79%
From NCERT
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Majority of the flowering plants produce:
| 1. | Female flowers | 2. | Male flowers |
| 3. | Hermaphroditic flowers | 4. | Neutral flowers |
Subtopic: Pollination & Outbreeding Devices |
84%
From NCERT
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In artificial hybridization experiments, if the female plant produces unisexual flowers, emasculation:
| 1. | Must be done before maturity. |
| 2. | Must be done after maturity. |
| 3. | Must be done at maturity. |
| 4. | Is not needed. |
Subtopic: Pollen - Pistil Interaction |
80%
From NCERT
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Consider the following statements regarding floral primordium:
| I: | It is formed at the shoot apical meristem |
| II: | The development of flowers is dependent on genetics, PGR, and environmental conditions. |
Of the two statements:
| 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: Stamen: Anther |
87%
From NCERT
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The germ pore in the pollen wall:
| 1. | is an aperture in the pollen intine that allows the pollen tube to exit. |
| 2. | is the name of the nucleus of the microspore mother cell. |
| 3. | is formed where sporopollenin is located in the exine. |
| 4. | is an aperture in the pollen exine that allows the pollen tube to exit. |
Subtopic: Stamen: Microsporangium | Stamen: Male Gametophyte |
82%
From NCERT
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At what temperature pollens can be stored for years in liquid nitrogen?
| 1. | 0°C | 2. | -100°C |
| 3. | -196°C | 4. | 4°C |
Subtopic: Stamen: Microsporangium | Stamen: Male Gametophyte |
98%
From NCERT
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In angiosperms, the mature female gametophyte is represented by:
| 1. | Nucellus | 2. | Megaspore |
| 3. | MMC | 4. | Embryosac |
Subtopic: Pistil: Female Gametophyte |
82%
From NCERT
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A typical angiosperm embryosac, at maturity, is:
| 1. | 8 celled and 8 nucleate | 2. | 8 celled and 7 nucleate |
| 3. | 7 celled and 8 nucleate | 4. | 7 celled and 7 nucleate |
Subtopic: Pistil: Ovule |
92%
From NCERT
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Chasmocleistogamy [Amphicarpy] is not seen in:
| 1. | Viola [Common pansy] | 2. | Oxalis |
| 3. | Pisum sativum | 4. | Commelina |
Subtopic: Pollination & Outbreeding Devices |
91%
From NCERT
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The dominating pollinating agent of flowering plants amongst animals are:
| 1. | Arboreal mammals | 2. | Insects |
| 3. | Birds | 4. | Reptiles |
Subtopic: Pollination & Outbreeding Devices |
92%
From NCERT
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