Is Embryo Sac Haploid or Diploid?

As ploidy is a concept of genetics which refers to the number of chromosomes occurring inside the nucleus of a cell. So the ploidy of the embryo sac is haploid.

Is the embryo sac haploid?

In angiosperms, each cell of the embryo sac is haploid.

Is embryo haploid or diploid justify?

Explanation: Embryo sac is haploid as it is shaped from haploid megaspore formed by meiosis. Zygote is shaped by the combination of male and female gametes,Subsequently it is diploid. Endosperm is triploid as it is shaped by triple fusion by combination of two polar nuclei and male gamete.