Ray initials are found in

Options

A. Cork cambium
B. Vascular cambium
C. Lateral meristem on the whole
D. Ground tissue

Answer

### Step-by-Step Solution:

1. **Understanding the Types of Initials**:
- There are two types of initials in plants: fusiform initials and ray initials.

2. **Characteristics of Fusiform Initials**:
- Fusiform initials are elongated and spindle-shaped.
- They are arranged in a vertical manner, similar to bricks in a wall.
- Their primary function is to aid in the formation of secondary xylem elements.

3. **Characteristics of Ray Initials**:
- Ray initials are horizontally arranged, unlike fusiform initials.
- They are found in the vascular cambium, which is a layer of tissue in plants responsible for secondary growth.

4. **Function of Ray Initials**:
- Ray initials contribute to the production of xylem rays and phloem rays, which are important for the transport of nutrients and water within the plant.

5. **Conclusion**:
- Based on the characteristics and functions of ray initials, we conclude that ray initials are found in the vascular cambium.

6. **Final Answer**:
- The correct answer is that ray initials are found in the vascular cambium.