Draw and label the cross-section of a lily ovary, identifying its main parts like the ovary wall, locules, septa, placenta, and ovules.

Here's a description of what the drawing would show and the parts to label:

• Overall Shape: The cross-section of a lily ovary is generally trilocular, meaning it has three distinct chambers. It would appear somewhat triangular or rounded with three internal compartments.
• Ovary Wall: This is the outermost layer, forming the boundary of the entire ovary.
• Locules (Chambers): There would be three distinct, roughly triangular or oval-shaped spaces within the ovary wall. These are the locules, where the ovules are contained.
• Septa (Partitions): These are the walls that divide the ovary into the three locules. They extend inwards from the ovary wall and meet at the center.
• Placenta: Located at the central axis where the septa meet, the placenta is the tissue to which the ovules are attached. Lilies exhibit axile placentation.
• Ovules: Within each locule, you would draw several small, oval or tear-drop shaped structures attached to the placenta. These are the ovules, which will develop into seeds.

A labeled diagram would point to:

1. Ovary Wall
2. Locule (or Chamber)
3. Septum (or Partition)
4. Placenta
5. Ovule