Which of the following is elements common in plant and animal cells ?

Options

A. Chloroplast
B. Cell Wall
C. Vacuoles
D. Mitochondria

Explanation

To determine which of the following elements are common in plant and animal cells, we need to analyze each option provided:

1. **Chloroplast**:
- Chloroplasts are organelles responsible for photosynthesis, a process that allows plants to convert sunlight into energy. Chloroplasts are only found in plant cells and some algae, not in animal cells.
- **Conclusion**: Not common to both.

2. **Cell Wall**:
- The cell wall is a rigid outer layer found in plant cells that provides structure and protection. It is primarily composed of cellulose. Animal cells do not have a cell wall; instead, they have a flexible cell membrane.
- **Conclusion**: Not common to both.

3. **Vacuoles**:
- Vacuoles are storage organelles. In plant cells, they are usually large and can occupy up to 80% of the cell's volume, storing nutrients and waste products. In animal cells, vacuoles are smaller and less prominent.
- **Conclusion**: Not common to both.

4. **Mitochondria**:
- Mitochondria are known as the "powerhouses of the cell." They are responsible for producing energy through aerobic respiration. Mitochondria are present in both plant and animal cells.
- **Conclusion**: Common to both.

Based on the analysis, the element that is common in both plant and animal cells is **Mitochondria**.

### Final Answer:
**Mitochondria** is the element common in both plant and animal cells.