DENDROLOGY

Detailed explanation-1: -Fertilisation takes place inside the ovary when the nucleus of pollen grain fuses with the nucleus of an ovule to produce a zygote. Shown below are the steps involved in pollination and fertilisation of a flowering plant.

Detailed explanation-2: -Inside the ovary are ovules. Each ovule contains an egg. Sperm cells within the pollen grain move down the pollen tube and into an ovule. Fertilization occurs as one of the sperm cells fuses with the egg inside the ovule.

Detailed explanation-3: -Fertilization can be defined as the fusion of the male gametes (pollen) with the female gametes (ovum) to form a diploid zygote. It is a physicochemical process which occurs after the pollination of the carpel. The complete series of this process takes place in the zygote to develop into a seed.