Fertilization in plants is the process of sexual reproduction that occurs after pollination and germination. It can be defined as the fusion of the male gametes (pollen) with the female gametes (ovum) to form a diploid zygote. The complete series of this process takes place in the zygote to develop into a seed. The method of fertilization in plants occurs when gametes in haploid conditions fuse to produce a diploid zygote. The process of fertilization in plants involves the following steps:

1. Pollination: Pollen grains are transferred from the anther to the stigma of the flower.

2. Germination: The pollen grain germinates after the pollination of the carpel and grows into the style by creating the pathway for the pollen grain to move down to the ovary.

3. Penetration: The pollen tube opens into the ovule through the micropyle and bursts into the embryo sac. Here, the male nucleus unites with the nucleus of an egg inside the embryo sac to form a zygote.

4. Double fertilization: In flowering plants, double fertilization occurs, where one sperm cell fertilizes the egg cell to form the zygote, while the other sperm cell fuses with the two polar nuclei to form the endosperm/32%3A_Plant_Reproductive_Development_and_Structure/32.07%3A_Pollination_and_Fertilization_-_Double_Fertilization_in_Plants).

After fertilization, the zygotes cells start to divide, and it eventually turns into an embryo or growing plant. The embryo is kept latent in a seed capsule until the right environmental factors allow it to grow into a new plant. The development of the zygote into a flower and further fruit takes place after the process of fertilization in a flower.