If the leaf cell of an angiosperm has 24 chromosomes, what will be the exact number of chromosomes in a synergid, the secondary nucleus, and the Primary Endosperm Nucleus (PEN) respectively?

Step-by-step solution

The leaf cell is a vegetative cell and represents the diploid (2n) chromosome number of the plant. Given 2n = 24, the haploid chromosome number (n) is 12. A synergid is a cell of the embryo sac and is haploid (n). Thus, it has 12 chromosomes. The secondary nucleus is formed by the fusion of two haploid polar nuclei in the central cell prior to fertilization. It is diploid (2n). Thus, it has 24 chromosomes. The Primary Endosperm Nucleus (PEN) is formed during double fertilization when a haploid male gamete (n) fuses