Geitonogamy

Q. Unisexuality of flowers prevents:

1. Geitonogamy, but not xenogamy
2. Autogamy and geitonogamy
3. Autogamy, but not geitonogamy
4. Both geitonogamy and xenogamy

Q. Which of the following types of pollination may require pollinating agents but it is genetically similar to autogamy?

1. Cleistogamy
2. Xenogamy
3. Geitonogamy
4. None of the above

Q. In which of the following plants, both autogamy and geitonogamy does not occur naturally?

1. Wheat
2. Papaya
3. Castor
4. Maize

Q.

Wind pollinated flowers produce light and dry pollen grains. Why?

Q. Choose the incorrect statement from the following statements.

1. In wind pollination, the pollen grains are light and non-sticky so that they can be transported in the wind currents.
2. Monoecious plants like castor and maize prevent both autogamy and geitonogamy.
3. Chalaza represents the basal part of the ovule.
4. Pollen grains are well preserved as fossils because of the presence of sporopollenin.

Q.

Geitonogamy is functionally cross pollination involving a pollinating agent while genetically it is similar to autogamy.

1. True

2. False

Q. Unisexuality of flowers prevents:

1. Geitonogamy, but not xenogamy
2. Autogamy and geitonogamy
3. Autogamy, but not geitonogamy
4. Both geitonogamy and xenogamy

Q.

When pollen is transferred from anther of a flower to stigma of another flower of the same plant it is referred to as

1. allogamy

2. xenogamy

3. geitonogamy

4. autogamy

Q. Choose the incorrect statement from the following statements.

1. In wind pollination, the pollen grains are light and non-sticky so that they can be transported in the wind currents.
2. Monoecious plants like castor and maize prevent both autogamy and geitonogamy.
3. Chalaza represents the basal part of the ovule.
4. Pollen grains are well preserved as fossils because of the presence of sporopollenin.

Q. Geitonogamy involves -

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