Which of the following floral characteristics is not seen in the floral diagram?

Options

A. Aestivation of sepals and petals
B. Placentation
C. Number of stamens
D. Position of ovary

Answer

To solve the question regarding which floral characteristic is not seen in the floral diagram, we can break down the options provided and analyze each one step by step.

### Step-by-Step Solution:

1. **Understanding Floral Diagrams**: Floral diagrams are graphical representations that depict the arrangement and number of floral parts (like sepals, petals, stamens, and carpels) in a flower. They help in understanding the structure and organization of flowers.

2. **Analyzing the Options**:
- **Option A: Estimation of Sepals and Petals**: This characteristic refers to the arrangement and number of sepals and petals. Floral diagrams do show the arrangement of these parts, so this option is seen in floral diagrams.

- **Option B: Presentation**: This term generally refers to the spatial arrangement of floral parts. This characteristic is also represented in floral diagrams, as they illustrate how the parts are positioned relative to one another.

- **Option C: Number of Stamens**: The number of stamens is a crucial aspect of floral diagrams, where different arrangements (like monadelphous or diadelphous) are depicted. Therefore, this characteristic is also included in floral diagrams.

- **Option D: Position of Ovary**: The position of the ovary is an important characteristic in floral morphology, but it is not typically represented in floral diagrams. Floral diagrams focus more on the arrangement and number of the parts rather than the specific position of the ovary.

3. **Conclusion**: After analyzing all the options, we find that the characteristic that is not seen in the floral diagram is **Option D: Position of Ovary**.

### Final Answer:
**Option D: Position of Ovary**