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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Identify the incorrect statement related to Pollination: 
1. Moths and butterflies are the most dominant pollinating agents among insects 
2. Pollination by water is quite rare in flowering plants 
3. Pollination by wind is more common amongst abiotic pollination 
4. Flowers produce foul odours to attract flies and beetles to get pollinated 
Subtopic:  Pollination & Outbreeding Devices |
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Given below are two statements:
I: Cleistogamous flowers are invariably autogamous
II: Cleistogamy is disadvantageous as there is no chance for cross pollination
In the light of the above statements, choose the correct answer from the options given below:
1. I is incorrect but II is correct
2. Both I and II are correct
3. Both I and II are incorrect
4. I is correct but II is incorrect

Subtopic:  Pollination & Outbreeding Devices |
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Bee-keeping helps to improve the yield of following crops Except ____________. 
1. Jowar 
2. Sunflower 
3. Apple 
4. Mustard 

Subtopic:  Pollination & Outbreeding Devices |
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