Question

Write the missing correlated terms.

$\left(k\right)$ Polyembryony : gymnosperms : : double fertilization : _______

Answer 1

Polyembryony : gymnosperms: : double fertilization : angiosperms.

$\bullet$ Fertilisation in angiosperms takes place twice.
$\bullet$ The pollen tube releases two sperm nuclei.
$\bullet$ One of the sperm nucleus fuses with the egg cell to form the zygote.
$\bullet$ Another, fuses with the two polar nuclei to form the endosperm.
$\bullet$ As the second fertilisation involves three nuclei, one sperm nuclei and two polar nuclei, it is referred to as triple fusion.