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 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn 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
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich 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
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhat 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. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn which one of the following, both autogamy and geitonogamy are prevented?
1. Wheat
2. Papaya
3. Castor
4. Maize
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyPrefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot
NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyGiven 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
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyBee-keeping helps to improve the yield of following crops Except ____________.
1. Jowar
2. Sunflower
3. Apple
4. Mustard
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology