Lens of eye retina is developed from

Options

A. Ectodermal
B. Mesodermal
C. Endodermal
D. Ectodermal and mesoderma.

Answer

**Step-by-Step Solution:**

1. **Identify the Structures Involved**: The question asks about the development of the lens of the eye and the retina. We need to determine the embryonic layer responsible for their formation.

2. **Understand the Embryonic Layers**: There are three primary germ layers in embryonic development: ectoderm, mesoderm, and endoderm. Each layer gives rise to different structures in the body.

3. **Focus on the Eye Development**: The eye consists of various components, including the lens and retina. The retina is part of the central nervous system and is derived from the neural ectoderm.

4. **Determine the Origin of the Lens**: The lens of the eye is formed from the surface ectoderm. Specifically, the optic vesicles, which are extensions of the forebrain, interact with the surface ectoderm to induce lens formation.

5. **Conclude the Answer**: Since both the retina and lens are derived from the ectoderm, the correct answer to the question is option A: ectodermal.

**Final Answer**: The lens of the eye retina is developed from the ectoderm (Option A).

---