Most of the cell–organelles are derived from which structure of cell :–

Options

A. Nucleus
B. Endoplasmic reticulum
C. Mitochondria
D. Chloroplast

Answer

To solve the question "Most of the cell organelles are derived from which structure of the cell?", we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks which structure of the cell gives rise to most of the organelles. This means we need to identify the structure that is responsible for the formation of various organelles within the cell.

2. **Analyzing the Options**:
- **Option 1: Nucleus**: The nucleus is primarily responsible for storing genetic material (DNA/RNA) and does not directly give rise to organelles. Therefore, this option is incorrect.
- **Option 2: Endoplasmic Reticulum**: The endoplasmic reticulum (ER) is a network of membranes involved in the synthesis of proteins (rough ER) and lipids (smooth ER). It is also known to be the site from which many organelles are derived. Thus, this option is correct.
- **Option 3: Mitochondria**: Mitochondria are known as the powerhouses of the cell, involved in energy production through cellular respiration. They do not derive other organelles, making this option incorrect.
- **Option 4: Chloroplast**: Chloroplasts are involved in photosynthesis and are specific to plant cells. Similar to mitochondria, they do not give rise to other organelles, so this option is also incorrect.

3. **Conclusion**: After analyzing all the options, the structure from which most of the cell organelles are derived is the **Endoplasmic Reticulum**.

### Final Answer:
The correct answer is **Endoplasmic Reticulum**.

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