Question

How does double fertilization take place in flowering plant along with triple fusion?

Answer 1

In fertilisation (in angiosperm), two types of fusion occur, i.e. syngamy and triple fusion, in the embryo sac. That is why it is called double fertilisation.

Ploidy of cells involved in double fertilisation:

Zygote is diploid (2n). It is formed as a result of
syngamy, i.e. fusion of two haploid gametes (male gamete+egg). Primary endosperm nucleus (3n) is formed as a result of triple fusion, i.e. fusion of two haploid polar nuclei with male gamete.

Answer 2

Explanation:

$<p style ="Color:red; font-family: cursive; background:black;font size25px;"> Triple fusion is a fusion that involves a sperm nucleus and two polar nuclei which occurs in the double fertilization in a seed-bearing plant that results in the endosperm formation. ... One of the two male gametes fuses with the nucleus of the egg cell to produce the zygote, this process is referred to as syngamy.$