Unisexuality of flowers prevents
1. Getionogamy but not xenogamy
2. Autogamy and geitonogamy
3. Autogamy but not geitonogamy
4. Both getionogamy and xenogamy

Dioecy in flowering plants prevents:
1. autogamy but not geitonogamy
2. geitonogamy but not autogamy
3. both autogamy and geitonogamy
4. neither autogamy nor geitonogamy

Plants with ovaries having only one or a few ovules, are generally pollinated by:
1. Bees
2. Butterflies
3. Birds
4. Wind

Both, autogamy and geitonogamy are prevented in -
1. Papaya
2. Cucumber
3. Castor
4. Maize

Wind pollinated flowers are
1. Small, producing large number of dry pollen grains
2. large producing abundant nectar and pollen
3. Small, producing nectar and dry pollen
4. Small, brightly coloured, producing large number of pollen grains

Wind pollination is common in:
1. Legumes
2. Lilies
3. Grasses
4. Orchids

Pollination in water hyacinth and water lily is brought about by the agency of
1. bats
2. water
3. insects or wind
4. birds

Geitonogamy involves
1. Fertilization of a flower by the pollen from another flower of the same plant
2. Fertilization of a flower by the pollen from same flower
3. Fertilization of a flower by the pollen from a flower of another plant in the same population
4. Fertilization of a flower by the pollen from a flower of another plant belonging to a distant population

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