Why is the process of fertilization in a flowering plant referred to as double fetilization ? Explain .

Explanation

In angiosperms, out of two male gametes in pollen tube, one male garnete fuses with the egg syngamy) to form zygote and other male gamete fuses with secondary rucleus (triple fusion) to form triploid endosperm nucleus,
. This procese of fertilization which cours twice in the same embryo male by two male gametes (syngamy and triple fusion) and called double fertilization,