The diploid and triploid product of double fertilization respectively are
Zygote and primary endosperm nucleus
Endosperm and cotyledons
Embryo and perisperm
Zygote and scutellum
Full name : $\mathrm{PEN}$.
Double fertilization is a characteristic of
Give scientific reasons : Two types of fusions, syngamy and triple fusion take place in embryo sac.
What is triple fusion? Where and how does it take place? Name the nuclei involved in triple fusion.