which of the following cell can change their shape ? A. white blood cell B . Amoeba cell C. red blood cell D. euglena cell

Options

A. A and B
B. B and C
C. A and D
D. B and D

Answer

To determine which of the following cells can change their shape, let's analyze each option step by step:

### Step 1: Understand the properties of each cell type
- **White Blood Cell (WBC)**: WBCs are part of the immune system and are known for their ability to change shape. They can engulf pathogens (like bacteria) to digest them, which requires them to alter their shape.

- **Amoeba Cell**: Amoebas are single-celled organisms that can also change their shape. They do this through extensions of their cytoplasm called pseudopodia, which they use to move and engulf food.

- **Red Blood Cell**: Red blood cells have a specific biconcave shape. While they can slightly deform under pressure, they do not actively change their shape like WBCs or amoebas.

- **Euglena Cell**: Euglena is a single-celled organism that has a more rigid structure and a flagellum for movement. While it can move, it does not change its shape in the same way that WBCs and amoebas do.

### Step 2: Analyze the options
- **Option A: White Blood Cell** - Can change shape (correct).
- **Option B: Amoeba Cell** - Can change shape (correct).
- **Option C: Red Blood Cell** - Does not actively change shape (incorrect).
- **Option D: Euglena Cell** - Does not actively change shape (incorrect).

### Conclusion
The cells that can change their shape are:
- **A. White Blood Cell**
- **B. Amoeba Cell**

### Final Answer
The correct options are A (White Blood Cell) and B (Amoeba Cell).

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