The arrangement of ovules within the ovary is known as

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about the term used to describe the arrangement of ovules within the ovary of a flowering plant.

2. **Identifying the Term**: The correct term for the arrangement of ovules in the ovary is "placentation."

3. **Definition of Placentation**: Placentation refers to the arrangement of the placenta, which bears the ovules, within the ovary chamber of a flower.

4. **Types of Placentation**: There are several types of placentation, each characterized by the specific arrangement of ovules:
- **Marginal Placentation**: The placenta develops along the fused margins of the carpel. This type can be found in the Leguminosae family.
- **Superficial Placentation**: The ovules are situated throughout the inner surface of a many-chambered ovary. This is seen in the Nymphaceae family.
- **Free Central Placentation**: The placenta appears to be situated at the central axis of the ovary after the partition walls break down. This is found in the Caryophyllaceae family.
- **Parietal Placentation**: The ovules develop on the ventral sutures of a unilocular ovary formed by the union of two or more carpels. This can be seen in the families Caricaceae and Violaceae.
- **Axile Placentation**: The ovary is divided into chambers corresponding to the number of carpels, and this type is found in families like Solanaceae and Liliaceae.

5. **Final Answer**: Therefore, the arrangement of ovules within the ovary is known as **placentation**.