NEET BIOLOGY

Detailed explanation-1: -Self-pollination happens when a plant’s own pollen fertilizes its own ovules. Cross-pollination happens when the wind or animals move pollen from one plant to another. The advantage of cross-pollination is that it helps keep a species genetically diverse.

Detailed explanation-2: -Plants have two ways of reproduction; sexual and asexual. . Sexual reproduction produces offspring by the fusion of gametes. This results in genetically different offspring. Asexual reproduction produces new individuals without the fusion of gametes. These are genetically identical to their parents.

Detailed explanation-3: -Sexual reproduction is the production of a new organism from two parents by making use of their gametes or sex cells. Plants also have male and female sex organs. When the male gamete combines with the female gamete, a new seed is formed.

Detailed explanation-4: -takes place after pollination where the pollen grains reach the ovary. Here, the male gamete fuses with the female gamete, ovule, to form a zygote. The ovary turns into a fruit, and fertilized ovules convert to seed. In angiosperms, two acts of fertilization occur known as double fertilization.