Spirogyra cells which are capable of division , growth and reproduction are

Options

A. Apical cell
B. Middle cells
C. All green cells
D. Basal cell.

Answer

To answer the question about Spirogyra cells that are capable of division, growth, and reproduction, we can break down the solution into the following steps:

### Step-by-Step Solution:

1. **Identify the Organism**:
- Spirogyra is a type of green algae known for its filamentous structure. It is commonly found in freshwater environments and is often referred to as pond scum or mermaid's tresses.

2. **Understand the Structure**:
- Spirogyra consists of elongated cells arranged in filaments. These cells are characterized by their green chloroplasts, which are essential for photosynthesis.

3. **Cellular Functions**:
- The cells of Spirogyra are capable of division (mitosis), growth (increase in size), and reproduction (asexual reproduction through fragmentation or sexual reproduction through conjugation).

4. **Identify the Specific Cells**:
- In Spirogyra, all the green cells in the filament are responsible for division, growth, and reproduction. These cells are elongated and contain chloroplasts.

5. **Distinguish Non-Green Cells**:
- The only non-green cell in Spirogyra is the basal cell, known as the holdfast, which is responsible for anchoring the filament to a substrate. This cell does not participate in division or reproduction.

6. **Conclusion**:
- Therefore, the correct answer to the question is that all the green cells of Spirogyra are capable of division, growth, and reproduction.

### Final Answer:
The Spirogyra cells which are capable of division, growth, and reproduction are **all the green cells** in the filament.