i) Self-pollination is the transfer of pollen from the anther of flower to the stigma of the same flower of the same plant or a genetically similar flower. Selfpollination is responsible for producing pure lines and to prevent any kind of genetic recombination. Mostly self-pollinating flowers have certain characteristics, like anthers cover the stigma densely so that when pollen is shed they fall directly on stigma also a group of flowers is clustered together to increase the possibility of self-pollination. Flowers do not need to waste their energy in creating attractive morphologies like order, bright and showy petals for attracting pollinators also self-pollination increases the chances of pollination.
ii) Soon as the egg nuclei fuses with male nuclei, and in some cases, after double fertilization is over the flower begins to lose its shine. Petals, stamens, and style either fall or wither away. Calyx may remain persistent in some cases such as Tomato, Brinjal. Major events are,
• The triploid primary endosperm nuclei formed develops into endosperm.
• The zygote develops into an embryo.
• Seeds are formed from ovules.
• Fruit is developed from the ovary
