Question

Mention the fate of different floral parts after fertilization?

Answer 1

Floral parts of a flower are those parts which take part in reproduction. When the plants mature several events occur in them, indicating formation of new plants from them. In flowering plants also, zygote is the end product of the fertilization.

Complete answer:
After attainment of maturity, all sexually reproducing organisms exhibit events and processes that have remarked fundamental similarity, even though the structures associated with sexual reproduction are indeed very different. The events of sexual reproduction that are elaborate and complex, follow a regular sequence.
Sexual reproduction is carried out by the fusion of male and female gamete, the formation of zygote and embryogenesis. For sequence it is distinguished into pre- fertilization, fertilization and post- fertilization.
In pre- fertilization two major events occurs, ie., gametogenesis and gamete transfer. Gametogenesis refers to the formation of male and female gametes that are haploid. The male gamete is antherozoid or sperm and the female gamete is egg or ovum. After their formation, male and female gametes must be physically brought together to facilitate fertilization. In most of the organisms, male gamete is motile and female in immotile.
Fertilization is the most vital event of sexual reproduction in which both the gametes fuse with each other to form zygote. In most aquatic animals, syngamy occurs outside the body, this gamete fusion is called external fertilization. Whereas in other terrestrial organisms, syngamy occurs inside the body of the organism, hence the process is called internal fertilization.
Events in sexual reproduction after the formation of zygote are called post- fertilization events. In flowering plants, the zygote is formed in the ovule. Main events that occurs are:
Sepals, petals and stamens of the flower withers and falls off from the plant.
The pistil however remains attached to the plant body.
The zygote develops in the embryo.
Ovules develop into the seed and ovary into fruit covered with pericarp, which is protective in function.
The calyx may be either attached in a dried and shrivelled form or falls off.
Seeds under favourable conditions are produced into new plants.

Note:
Reproduction is defined as a biological process in which an organism gives rise to young ones similar to itself. Plant reproduce by both asexual and sexual way. In both plants and animals, hormones are responsible for the transition between the three phases. Interaction between hormones and certain environment factors regulates the reproductive processes and the associated behavioral expressions of organisms.