Self-incompatibility as an outbreeding device should not be true for which of the following plants?
1. Papaya
2. Maize
3. Castor
4. Sugarcane
Subtopic: Â Pollination & Outbreeding Devices |
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Read the following statements and select the correct option.
1. Only statement A is incorrect
2. Only statement B is incorrect
3. Both statements A and B are correct
4. Both statements A and B are incorrect
| A: | Castor and maize plant can prevent both autogamy and geitonogamy. |
| B: | Orchid fruit contains thousands of tiny seeds. |
1. Only statement A is incorrect
2. Only statement B is incorrect
3. Both statements A and B are correct
4. Both statements A and B are incorrect
Subtopic: Â Post Pollination Events |Â Seed |
 62%
From NCERT
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Subtopic: Â Stamen: Male Gametophyte |
 97%
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Subtopic: Â Pollination & Outbreeding Devices |
 72%
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Match the following Columns:
1. 3 2 1 4
2. 2 4 1 3
3. 4 3 2 1
4. 1 3 2 4
| Column I (Pollination technique) |
Column II (Pollinator) |
| A. Cheiropterophily | 1. Ant |
| B. Anemophily | 2. Bat |
| C. Myrmecophily | 3. Snail |
| D. Malacophily | 4. Wind |
2. 2 4 1 3
3. 4 3 2 1
4. 1 3 2 4
Subtopic: Â Pollination & Outbreeding Devices |
 87%
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Subtopic: Â Stamen: Male Gametophyte |
 97%
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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: Â Endosperm |
 88%
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Floral rewards for pollinating agents can be all of the following, except
1. Nectar
2. Fragrance
3. Place for laying eggs
4. Pollen grains
1. Nectar
2. Fragrance
3. Place for laying eggs
4. Pollen grains
Subtopic: Â Pollination & Outbreeding Devices |
 68%
From NCERT
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Amongst the following, most dominant pollinating agents(s) in angiosperms is/are
1. Water
2. Birds
3. Wind
4. Insects
1. Water
2. Birds
3. Wind
4. Insects
Subtopic: Â Pollination & Outbreeding Devices |
 77%
From NCERT
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Select the odd one out w.r.t type of pollination.
1. Zostera
2. Vallisneria
3. Water lily
4. Hydrilla
1. Zostera
2. Vallisneria
3. Water lily
4. Hydrilla
Subtopic: Â Pollination & Outbreeding Devices |
 80%
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