The small body in seed-bearing plants that contains the female reproductive cells is called the ovule.

Here's a breakdown:

* Ovule: A tiny structure within the ovary of a flower. It contains the female gametophyte, which is the structure that produces the egg cell.

* Female gametophyte: This is the haploid (one set of chromosomes) structure within the ovule that eventually forms the egg cell.

* Egg cell: The female gamete, or sex cell, that is fertilized by a sperm cell to form a zygote.

In seed-bearing plants (gymnosperms and angiosperms), the ovule develops into a seed after fertilization.