Question

Triple fusion in angiosperms involves which phenomenon of fusion?

Answer 1

Triple Fusion

1. Triple fusion is the process of sexual reproduction in angiosperms.
2. It involves the fusion of the second sperm cell with two polar nuclei resulting in double fertilization in a seed-containing plant and resulting in the formation of the endosperm.
3. The process of fusion occurs in the angiosperm's embryo sac.
4. During the process, the stigma gets in contact with the pollen grains and germinates giving rise to the pollen tube.
5. The pollen tube enters the ovule through style. This pollen tube enters into one of the synergids, before which two male gametes are released.
6. One of the two male gametes fuses with the egg leading to the formation of the zygote.
7. A primary endosperm nucleus which is triploid in nature is formed when another male gamete combines with two polar nuclei that are present at the centre of the cell.
8. The process of fusion involves combining three haploid nuclei, hence is known as triple fusion.