What is triple fusion? Where and how does it take place? Name the nuclei involved in triple fusion.

Double fertilisation is uniqe to angiosperms.

It involves syngamy and triple fusion.

Triple fusion refers to the process of fusion of three haploid nuclei. It takes place in the embryo sac.

The 3-nuclei that fuse together are, nucleus of the male gamete and 2-polar nuclei of the central cell to produce a triploid primary endosperm nucleus.