In both chordates and non-chordates intestine develops from

Options

A. Pharyngeal pouch
B. Ectoderm
C. Endoderm
D. Mesoderm

Explanation

**Step-by-Step Solution:**

1. **Understanding Germ Layers**: In embryonic development, organisms develop from three primary germ layers: ectoderm, mesoderm, and endoderm. Each layer gives rise to different tissues and organs in the body.

2. **Identifying the Germ Layers**:
- **Ectoderm**: This layer forms the outermost structures, including skin and nervous system.
- **Mesoderm**: This middle layer forms muscles, bones, and the circulatory system.
- **Endoderm**: This innermost layer is responsible for forming the internal organs, particularly the digestive system.

3. **Focus on the Intestine**: The question specifically asks about the development of the intestine in both chordates and non-chordates.

4. **Role of Endoderm**: The endoderm is crucial for the formation of the digestive system, which includes the intestine. In both chordates (like mammals, birds, etc.) and non-chordates (like insects, mollusks, etc.), the intestine develops from the endoderm layer.

5. **Conclusion**: Therefore, the correct answer to the question is that the intestine develops from the **endoderm**.

**Final Answer**: The intestine develops from the endoderm in both chordates and non-chordates.

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