with the help of a neat labelled diagram,explain how does fertilisation take place in flowering plants
Answers
Answer :
Fertilization in flowering plants: In plants, pollination is followed by fertilization. Once the pollen grains are deposited on the stigma, it forms the pollen tube. The pollen tube grow through the ovules and reach the ovary where the egg cell is located. The pollen tube normally enters the ovule through a small opening called micropyle. Inside the ovule, the pollen tube releases two male gametes into the embryo sac.
One male gamete fuses with the egg, this fusion is called syngamy and its product is called zygote. The other male gamete fuse with two polar bodies and this process is called triple fusion, where three nuclei are involved in the fusion process, one male gamete and two polar nuclei. Thus, inside each embryo sac, two fusions, syngamy and triple fusion, takes place. This mechanism of two fusions occurring in an embryo sac is called double-fertilization. After fertilization, ovary develops into the fruit and ovules develop into the seeds.
Explanation :
Hope you got your answer
