How many embryo sacs are present in a single ovule?

The number of embryo sacs that are present in a single ovule is one. In the process of plant reproduction, each ovule typically contains a single embryo sac. The embryo sac is a crucial structure within the ovule, as it plays a central role in the fertilization process that leads to seed formation. The ovule is located within the ovary of the flower, and it contains the female gametophyte, which is the embryo sac.

The embryo sac is a multinucleate structure, originating from a single mother cell within the ovule. It undergoes a series of developmental stages, culminating in the formation of the egg cell and other cells that participate in the fertilization process. The primary role of the embryo sac is to facilitate the union of the female egg cell and male pollen grain (or sperm cell) during fertilization.