Which of the following is the correct reason for the cross pollination?
A.
Ovary and pollen mature at different times
B.
Position of the stigma and anthers is such that self-pollination becomes impossible
C.
In many plants, unisexual male and female flowers are located on different parts of the plants.
D.
All of these
Answers
Answer:
Cross-pollination is the process of applying pollen from one flower to the pistils of another flower. Pollination occurs in nature with the help of insects and wind. This process can also be done by hand to produce offspring with desired traits, such as colour or pest resistance.
Answer:
Disadvantages of cross pollination:
Pollination may fail due to distance barrier.
Flowers have to totally depend on the external agencies for pollination.
More wastage of pollen.
It may introduce some undesirable characters.
Advantages of cross-pollination: - Genetics recombination- as the pollination occurs between flowers of two different plants this results in the origin of new varieties. It helps in evolution. -The offspring produced through cross-pollination is healthy, viable, and stronger (resistant) due to hybrid vigour.
Explanation:
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