Which cell organelle reduces the number of E.R. and mitochondria -

Options

A. Lysosome
B. E.R.
C. Mitochondria
D. Golgibody

Answer

**Step-by-Step Solution:**

1. **Understand the Question**: The question asks which cell organelle is responsible for reducing the number of endoplasmic reticulum (E.R.) and mitochondria in a cell.

2. **Identify the Options**: The options provided include lysosome, endoplasmic reticulum, mitochondria, and gallbladder.

3. **Analyze Each Option**:
- **Lysosome**: Known as the "suicidal bag" of the cell, lysosomes contain acid hydrolases that break down waste materials and cellular debris. They can digest worn-out organelles, including E.R. and mitochondria, thus reducing their numbers.
- **Endoplasmic Reticulum (E.R.)**: This organelle is primarily involved in protein synthesis and lipid metabolism. It does not reduce its own number or that of mitochondria.
- **Mitochondria**: These organelles are responsible for cellular respiration and energy production. They do not reduce their own numbers.
- **Gallbladder**: This is not a cell organelle; it is an organ involved in the storage and concentration of bile. Therefore, it cannot be the answer.

4. **Conclusion**: Based on the analysis, the correct answer is **lysosome**, as it is the organelle that reduces the number of endoplasmic reticulum and mitochondria by digesting them.

**Final Answer**: Lysosome

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