Which one of the following is a triploid cell ?

Step-by-step solution

Synergids are haploid ( n ) cells present in the embryo sac. The central cell contains two polar nuclei ( n + n ) which fuse to form a diploid secondary nucleus ( 2n ). The zygote is a diploid ( 2n ) cell formed by the fusion of a male gamete ( n ) with the egg cell ( n ). The primary endosperm cell is formed by the fusion of a male gamete ( n ) with the two polar nuclei or secondary nucleus ( 2n ) of the central cell. This process is called triple fusion, resulting in a triploid ( 3n ) primary endosperm cell. Answ