Succulent stem is found in

Options

A. Pisum
B. Casuarina
C. Euphorbia
D. Oxalis

Answer

**Step-by-Step Solution:**

1. **Understanding Succulent Stems:**
- Succulent stems are characterized by their thick and fleshy structure, which allows them to store water. This adaptation is particularly useful in arid or desert climates where water is scarce.

2. **Identifying the Function of Succulent Stems:**
- The primary function of succulent stems is to store water, enabling the plant to survive in dry conditions. They also exhibit features that help in water conservation, such as reduced stomata and a special metabolic process known as Crassulacean Acid Metabolism (CAM).

3. **Analyzing the Options:**
- We have four options to evaluate:
- **Option 1: Pesum** - This plant belongs to the family Fabaceae and does not have a succulent stem.
- **Option 2: Casuarina** - These are deciduous trees that do not possess succulent stems, as they grow in coastal habitats.
- **Option 3: Euphorbia** - This genus includes subtropical succulent species that do have succulent stems and are capable of storing water.
- **Option 4: Oxalis** - This is a genus of flowering plants that do not have succulent stems.

4. **Determining the Correct Answer:**
- After analyzing all the options, it is clear that only **Euphorbia** has succulent stems. Therefore, the correct answer is **Option 3: Euphorbia**.