Which one produces primary tissues?

Options

A. Apical meristem
B. Root apical meristem
C. Shoot apical meristem
D. Lateral meristem

Answer

To solve the question "Which one produces primary tissues?", we will follow these steps:

### Step 1: Understand Primary Tissues
Primary tissues are the first tissues formed during the growth of a plant. They include:
- **Epidermis**: The outer layer that protects the plant.
- **Vascular tissues**: Comprising xylem (which conducts water) and phloem (which conducts food).
- **Ground tissues**: The tissues that fill the space between the epidermis and vascular tissues.

### Step 2: Identify the Types of Meristems
Meristems are regions in plants where cells are actively dividing. The main types of meristems include:
- **Apical Meristem**: Located at the tips of roots and shoots, responsible for primary growth.
- **Lateral Meristem**: Involved in secondary growth, increasing the girth of the plant.
- **Root Apical Meristem**: Specifically located at the root tips.
- **Shoot Apical Meristem**: Located at the shoot tips.

### Step 3: Determine Which Meristem Produces Primary Tissues
Among the options provided:
- **Apical Meristem** (including both root and shoot apical meristems) is responsible for the production of primary tissues. It contributes to the elongation of the plant and the formation of new cells that differentiate into primary tissues.

### Step 4: Conclusion
The correct answer to the question is **A, Epical Meristem**. This is because the apical meristem is responsible for the primary growth of the plant, leading to the formation of primary tissues.