Embryo Sac of Angiosperm Before Fertilization in Three Stages
Pictured is an embryo sac of angiosperm before fertilization. The three stages are represented by A, B, and C. In A the helped and antipodal cells and the embryonal vesicle are still angular and the two nuclei are wide apart. In B the embryonal vesicle is rounded and the nuclei lie close together. In C the embryonal vesicle is ready to be fertilized.