The term used for transfer of pollen grains from anthers of one plant to stigma of a different plant which during pollination, brings genetically different types of pollen grains to stigma, is:

1. Chasmogamy 2. Cleistogamy
3. Xenogamy 4. Geitonogamy

Subtopic:  Pollination & Outbreeding Devices |
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In water hyacinth and water lily, pollination takes place by:

1. Water currents only

2. Wind and water

3. Insects and water

4. Insects or wind

Subtopic:  Pollination & Outbreeding Devices |
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Which of the following is incorrect for wind-pollinated plants?

1. Well exposed stamens and stigma

2. Many ovules in each ovary

3. Flowers are small and not brightly colored

4. Pollen grains are light and non-sticky

Subtopic:  Pollination & Outbreeding Devices |
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What type of pollination takes place in Vallisneria?

1.  Pollination occurs in submerged conditions by water.
2.  Flowers emerge above the surface of water and pollination occurs by insects.
3.  Flowers emerge above the water surface and pollen is carried by the wind.
4.  Male flowers are carried by water currents to female flowers at the surface of the water.

Subtopic:  Pollination & Outbreeding Devices |
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In which one of the following, both autogamy and geitonogamy are prevented?

1. Wheat

2. Papaya

3. Castor

4. Maize

Subtopic:  Pollination & Outbreeding Devices |
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Winged pollen grains are present in:

1 Mustard
2. Cycas
3. Mango
4. Pinus

Subtopic:  Pollination & Outbreeding Devices |
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Which one of the following plants shows a very close relationship with a species of moth, where none of the two can complete its life cycle without the other?
1. Hydrilla 2. Yucca
3. Banana 4. Viola

Subtopic:  Pollination & Outbreeding Devices |
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Flowers which have single ovule in the ovary and are packed into inflorescence are usually pollinated by:

1. Bee

2. Wind

3. Bat

4. Water

Subtopic:  Pollination & Outbreeding Devices |
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A dioecious flowering plant prevents both:

1. Autogamy and geitonogamy

2. Geitonogamy and xenogamy

3. Cleistogamy and xenogamy

4. Autogamy and xenogamy

Subtopic:  Pollination & Outbreeding Devices |
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Pollination in water hyacinth and water lily is brought about by the agency of

1.  water

2.  insects or wind

3.  birds

4.  bats

Subtopic:  Pollination & Outbreeding Devices |
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