GERL concerned with the biogenesis of :–

Options

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

Answer

### Step-by-Step Solution:

1. **Understanding GERL**:
- GERL stands for Golgi-Endoplasmic Reticulum-Lysosomal complex. It is a cellular structure involved in the processing and transport of proteins and lipids.

2. **Analyzing the Options**:
- The question asks which biogenesis GERL is concerned with. We need to evaluate the given options one by one.

3. **Option 1: Collagy Body**:
- Collagy Bodies are involved in the packaging of proteins. They are not directly related to the GERL complex. Therefore, this option is incorrect.

4. **Option 2: Endoplasmic Reticulum**:
- The Endoplasmic Reticulum (ER) is primarily involved in the synthesis of proteins and lipids. While it is part of the GERL complex, it is not the end product of biogenesis that GERL is concerned with. Thus, this option is also incorrect.

5. **Option 3: Mitochondria**:
- Mitochondria are known as the powerhouse of the cell and are primarily involved in cellular respiration. They are not related to the GERL complex. Hence, this option is incorrect.

6. **Option 4: Lysosomes**:
- Lysosomes are membrane-bound organelles that contain hydrolytic enzymes for digestion and waste removal. GERL is directly involved in the biogenesis of lysosomes. Therefore, this option is correct.

7. **Conclusion**:
- The correct answer to the question "GERL is concerned with the biogenesis of:" is **Lysosomes**.

### Final Answer:
**Lysosomes**