Protoplast is

Options

A. Another name for protoplasm
B. an animal cell
C. a plant cell without a cell wall
D. a plant cell

Explanation

**Step-by-Step Solution:**

1. **Understanding Cell Structure**: Begin by recognizing the basic structure of a plant cell. A typical plant cell consists of three main components: the cell wall, plasma membrane, and cytoplasm.

2. **Identifying the Components**:
- **Cell Wall**: The rigid outer layer that provides structural support and protection.
- **Plasma Membrane**: The semi-permeable membrane that surrounds the cytoplasm and controls the movement of substances in and out of the cell.
- **Cytoplasm**: The jelly-like substance within the cell that contains organelles and is the site for many metabolic processes.

3. **Defining Protoplast**: The protoplast is defined as the part of the plant cell that remains after the cell wall has been removed. It consists of the plasma membrane and the cytoplasm along with all its contents, such as organelles.

4. **Conclusion**: Therefore, protoplast can be summarized as the living part of the plant cell, which includes the plasma membrane and cytoplasm, excluding the cell wall.

---