Here's a breakdown:

* Ovary: This is the swollen base of the pistil (the female reproductive part of a flower). Inside the ovary are one or more ovules, which contain the egg cells.

* Ovules: These are tiny structures that develop into seeds after fertilization.

* Egg Cells: These are the female gametes, which fuse with sperm during fertilization to produce a zygote.

Let me know if you have any other questions!