Ectoderm give rise to

Options

A. Cornea, hearth, bronchi, dentine
B. Adrenal cortex, tongue, liver, retina
C. Lungs, adrenal medulla,dermis, thyroid
D. Enamel of teeth, nails, adrenal medulla, hair.

Answer

To answer the question "Ectoderm gives rise to," we will analyze the options provided and identify which structures are derived from the ectoderm.

### Step-by-Step Solution:

1. **Understanding Ectoderm**:
- The ectoderm is one of the three primary germ layers in the early embryo. It primarily gives rise to structures that form the outer layer of the body.

2. **Reviewing the Options**:
- **Option A**: Cornea, heart, bronchi, dentine.
- The cornea is derived from the mesoderm, and the heart and bronchi are also mesodermal. Dentine is derived from the mesoderm as well. Thus, this option does not contain ectodermal derivatives.

- **Option B**: Adrenal cortex, tongue, liver, retina.
- The adrenal cortex, tongue, and liver are derived from the endoderm. The retina is ectodermal, but since the majority of this option is endodermal, it is not correct.

- **Option C**: Lungs, adrenal medulla, dermis, thyroid.
- Lungs and thyroid are endodermal, while the adrenal medulla is ectodermal. The dermis is also derived from mesoderm. Thus, this option is not correct.

- **Option D**: Enamel of teeth, nails, adrenal medulla, and hair.
- Enamel of teeth, nails, and hair are all derived from the ectoderm. The adrenal medulla, which is part of the adrenal glands, also has ectodermal origins. This option contains only ectodermal derivatives.

3. **Conclusion**:
- After analyzing all the options, we find that **Option D** (enamel of teeth, nails, adrenal medulla, and hair) is the correct answer as all components listed are derived from the ectoderm.

### Final Answer:
**Option D**: Enamel of teeth, nails, adrenal medulla, and hair.