Transfer of pollen grains from the anther to the stigma of another flower of the same plant is called     
1. Geitonogamy
2. Karyogamy
3. Autogamy
4. Xenogamy

Subtopic:  Pollination & Outbreeding Devices |
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Filiform apparatus is a characteristic feature of:

1. Suspensor 2. Egg
3. Synergid 4. Zygote
Subtopic:  Stamen: Male Gametophyte |
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Nucellar polyembryony is reported in which of the following species?
1. Citrus
2. Gossypium
3. Triticum
4. Brassica

Subtopic:  Apomixis & Polyembryony |
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In which one of the following pollination is autogamous
1. Geitonogamy
2. Xenogamy
3. Chasmogamy
4. Cleistogamy

Subtopic:  Pollination & Outbreeding Devices |
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Wind pollination is common in:
1. Legumes
2. Lilies
3. Grasses
4. Orchids

Subtopic:  Pollination & Outbreeding Devices |
 86%
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Both, autogamy and geitonogamy are prevented in -
1. Papaya
2. Cucumber
3. Castor
4. Maize

Subtopic:  Pollination & Outbreeding Devices |
 82%
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An organic substance that can withstand environmental extremes and cannot be degraded by any enzyme is:

1. Cuticle 2. Sporopollenin
3. Lignin 4. Cellulose
Subtopic:  Stamen: Male Gametophyte |
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The gynoecium consists of many free pistils in flowers of
1. Aloe
2. Tomato
3. Papaver
4. Michelia

Subtopic:  Pistil: Ovule | Pistil: Female Gametophyte |
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Even in absence of pollinating agents, seed setting is assured in:

1. Commelina 2. Zostera
3. Salvia 4. Fig
Subtopic:  Pollination & Outbreeding Devices |
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Which one of the following statements is wrong?

1. When pollen is shed at two-celled stage, double fertilization does not take place.
2. Vegetative cell is larger than generative cell.
3. Pollen grains in some plants remain viable for months.
4. Intine is made up of cellulose and pectin.
Subtopic:  Stamen: Male Gametophyte |
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