Lens of eyes is derived from

Options

A. Ectoderm
B. Mesoderm
C. Endoderm
D. Both (mesoderm) and (endoderm)

Answer

To answer the question "Lens of eyes is derived from," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Layers of Germ Cells**:
- After fertilization, a zygote is formed, which undergoes a process called gastrulation.
- Gastrulation leads to the formation of three primary germ layers: ectoderm, mesoderm, and endoderm.

2. **Identifying the Functions of Each Germ Layer**:
- Each of these layers is responsible for developing different organs and structures in the body:
- **Ectoderm**: Forms the outer layer of the skin, nervous system, and sensory organs.
- **Mesoderm**: Forms muscles, bones, and the circulatory system.
- **Endoderm**: Forms internal organs such as the digestive tract and respiratory system.

3. **Focusing on the Lens of the Eye**:
- The lens of the eye is a specialized structure that plays a crucial role in vision.
- It is important to identify which germ layer contributes to the formation of the lens.

4. **Conclusion**:
- The lens of the eye is derived from the ectoderm.
- Therefore, the correct answer to the question is **option 1: ectoderm**.