Biology · HSEXUAL REPRODUCTION IN FLOWERING PLANTS
हिन्दीWhat is the ploidy level of the Primary Endosperm Nucleus (PEN) and the Zygote in a typical angiosperm, respectively?
Correct answer · Option 2
Triploid (\( 3n \)) and Diploid (\( 2n \))
Explanation
PEN is formed by the fusion of three haploid nuclei (one male gamete + two polar nuclei), so it is triploid (\( 3n \)). The zygote is formed by syngamy (male gamete + egg cell), so it is diploid (\( 2n \)).