In Nelumbium/Victoria/Tropaeolum the leaf blade is

Options

A. Peltate
B. Centric
C. Unifacial
D. Ligulate

Answer

To answer the question regarding the leaf blade in Nelumbium, Victoria, or Tropaeolum, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Plants**: First, recognize that the question refers to three specific plants: Nelumbium (commonly known as the lotus), Victoria (the giant water lily), and Tropaeolum (commonly known as nasturtium).

2. **Understand Leaf Blade Characteristics**: The leaf blade is a crucial part of the plant, and its shape and attachment can vary significantly among different species.

3. **Examine Leaf Blade Structure**: In the case of Nelumbium and Victoria, the leaf blade is described as being "deeply lobed." This means that the leaf has significant indentations or divisions.

4. **Attachment of Petiole**: The petiole (the stalk that attaches the leaf blade to the stem) is attached to the middle of the adaxial (upper) surface of the leaf. This unique attachment point is a defining characteristic of these plants.

5. **Define Peltate Leaves**: The term "peltate" refers to a specific leaf shape where the petiole is attached to the leaf blade in such a way that it is not at the edge but rather at the center, creating a shield-like appearance.

6. **Evaluate the Options**:
- **Peltate**: This is correct as it describes the leaf blade of Nelumbium and Victoria.
- **Centric**: This is incorrect; the term does not accurately describe the leaf blade structure.
- **Unifacial**: This is also incorrect; unifacial leaves have only one surface that is functional for photosynthesis, which is not the case here.
- **Ligulate**: This is incorrect as ligulate leaves are characteristic of grasses and have a ligule at the base.

7. **Conclusion**: Based on the characteristics discussed, the correct answer to the question is that the leaf blade in Nelumbium, Victoria, and Tropaeolum is **peltate**.

### Final Answer:
The leaf blade in Nelumbium, Victoria, and Tropaeolum is **peltate**.