Phylloclade is found in

Options

A. Chrysanthemum
B. Asparagus
C. Ruscus
D. Opuntia

Explanation

### Step-by-Step Solution:

1. **Definition of Phylloclade**:
- A phylloclade is a modified stem that resembles a leaf. It is flattened and performs the functions typically associated with leaves, such as photosynthesis.

2. **Examples of Plants with Phylloclades**:
- Phylloclades are found in various plants. According to the information provided, they can be found in:
- **Chrysanthemum**
- **Asparagus**
- **Ruscus**
- **Opuntia** (commonly known as cactus)

3. **Function of Phylloclades**:
- The primary function of phylloclades is to carry out photosynthesis. Since these structures resemble leaves, they effectively perform the same role in the plant's survival and energy production.

4. **Habitat of Phylloclade Plants**:
- Phylloclades are commonly found in xerophytes, which are plants adapted to survive in arid environments, such as deserts. They help the plant conserve water while still allowing for photosynthesis.

5. **Characteristics of Phylloclades**:
- Phylloclades are typically flattened and green, which aids in maximizing surface area for sunlight absorption, similar to leaves.