Protoplast is

Options

A. another name for protoplasm
B. an animal cell
C. a plant cell without a cell well
D. a plant cell

Answer

### Step-by-Step Text Solution:

1. **Definition of Protoplast**: Protoplast refers to the living part of a plant cell that includes the cell membrane and the cytoplasm, but excludes the cell wall.

2. **Components of a Plant Cell**: A typical plant cell consists of three main components:
- **Cell Wall**: A rigid outer layer made primarily of cellulose.
- **Cell Membrane**: A semi-permeable membrane that surrounds the cytoplasm.
- **Cytoplasm**: The gel-like substance within the cell membrane that contains various organelles.

3. **Understanding Protoplast Formation**: When the cell wall of a plant cell is removed, the remaining structure is the protoplast, which consists of the cell membrane and the cytoplasm.

4. **Conclusion**: Therefore, a protoplast can be defined as a plant cell without its cell wall. It is the living part of the cell that is responsible for various metabolic activities.