Final answer:
The *lilum ovary* is a structure found in angiosperms that contains the ovules. Under a microscope, it appears as a specialized tissue with oocytes surrounded by follicle cells. The *lilum ovary* has distinct layers and cell types, which can be observed and studied under a microscope.
Step-by-step explanation:
The *lilum ovary* is a structure found in angiosperms (flowering plants) that contains the ovules.
Under a microscope, the *lilum ovary* would appear as a specialized tissue composed of the ovarian stroma, which forms the bulk of the adult ovary. Oocytes, or developing eggs, are found within the outer layer of the ovarian stroma, each surrounded by supporting cells called follicle cells. These structures are collectively called a follicle.
Overall, the *lilum ovary* is composed of different layers and cell types, which can be observed and studied under a microscope to understand its structure and function.