Which of the following structures is not prominent in plant cells?

Options

A. Vacuole
B. Centriole
C. Ribosome
D. Chloroplast

Answer

To determine which structure is not prominent in plant cells, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Identify the Structures**: We need to look at the options given in the question. The options are vacuole, centriole, ribosome, and chloroplast.

2. **Analyze Vacuole**:
- Vacuoles are large membrane-bound sacs found in plant cells.
- They play a crucial role in maintaining turgor pressure, storing nutrients and waste products, and helping in cell growth.
- **Conclusion**: Vacuoles are prominent in plant cells.

3. **Analyze Centriole**:
- Centrioles are cylindrical structures that are part of the centrosome and are involved in cell division.
- They are primarily found in animal cells and are not present in plant cells.
- **Conclusion**: Centrioles are not prominent in plant cells.

4. **Analyze Ribosome**:
- Ribosomes are the cellular structures responsible for protein synthesis.
- They are present in both plant and animal cells.
- **Conclusion**: Ribosomes are prominent in plant cells.

5. **Analyze Chloroplast**:
- Chloroplasts are the organelles responsible for photosynthesis in plant cells.
- They contain chlorophyll, which gives plants their green color and allows them to convert sunlight into energy.
- **Conclusion**: Chloroplasts are prominent in plant cells.

6. **Final Answer**: Based on the analysis, the structure that is not prominent in plant cells is **centriole**.