Which of the following provides mechanical support and shape to the cell :-

Options

A. Golgi comples
B. Centrioles
C. Lomasomes
D. E.R.

Answer

To determine which structure provides mechanical support and shape to the cell, we can analyze the options provided.

### Step-by-Step Solution:

1. **Understand the Question**: The question asks which component of the cell provides mechanical support and shape. This is a fundamental aspect of cell biology.

2. **Identify Key Structures**: The main structures in a cell that could provide support and shape include the cytoskeleton, endoplasmic reticulum, Golgi complex, centrioles, and lysosomes.

3. **Cytoskeleton**: The cytoskeleton is known to be an elaborate network of filamentous proteins that provides mechanical support and shape to the cell. It is essential for maintaining the cell's structure.

4. **Endoplasmic Reticulum (ER)**: The ER is involved in various functions, including protein synthesis and transport. While it does have some role in maintaining cell structure, it is not primarily responsible for mechanical support.

5. **Golgi Complex**: The Golgi apparatus is mainly involved in the modification, sorting, and packaging of proteins and lipids. It does not provide mechanical support.

6. **Centrioles**: Centrioles are primarily involved in cell division and do not contribute to the overall shape or mechanical support of the cell.

7. **Lysosomes**: Lysosomes are involved in digestion and waste removal within the cell and are not related to mechanical support.

8. **Conclusion**: Since the cytoskeleton is not listed among the options, the next best option that provides some structural support is the endoplasmic reticulum. Therefore, the answer is the **endoplasmic reticulum**.

### Final Answer:
The structure that provides mechanical support and shape to the cell is the **endoplasmic reticulum**.