Xenogamy

Q.

Anthesis is a phenomenon which refers to

1. formation of pollen

2. reception of pollen by stigma

3. opening of flower bud

4. development of anther

Q.

Maturation of stigma before anthers of the same flower is called as protogyny. True or False?

1. True

2. False

Q.

Which of the following result in outbreeding?

1. Heterostyly

2. Protoandry

3. Herkogamy

4. All of the above.

Q. 12.1. Explain briefly the disadvantages of asexual reproduction.

12.2. Define pollination. What are the two types of pollination?

12.3. a) Write the characteristics of wind-pollinated flowers.
b) What is the function of the ovary?
c) What are the primary and accessory sex organs in males?

Q. Xenogamy is

1. pollination between two flowers of two different plants
2. pollination between two different flowers of same plant on same branch
3. pollination between anthers and stigma of same flowers
4. a mechanism of parthenocarpy