Definitions / Explanation : Double Fertilisation
$\rightarrow$ In angiosperms among two male gametes, one of the male gametes fuses with egg cell and forms a zygote while the other male gamete fuses with the diploid secondary nucleus and forms triploid primary endosperm nucleus $(PEN)$ . This involvement of two fusions, is called double fertilisation.
In double fertilization, after entering ..... of the synergids, the pollen tube releases ..... male gametes into the cytoplasm of the synergids
Fusion product of polar nuclei and male gamete is
Genotype of endosperm is $ZZA,$ find out the genotype of male and female plant respectively
The nuclei of the sperm and egg fuse as a result of
Double fertilization is fusion of