Liver and pancrease develop form

Options

A. Ecotoderm
B. Endoderm
C. Mesoderm
D. Both A and B

Answer

**Step-by-Step Solution:**

1. **Understanding Germ Layers**: In embryonic development, there are three primary germ layers: ectoderm, mesoderm, and endoderm. Each layer differentiates into various tissues and organs.

2. **Role of Each Germ Layer**:
- **Ectoderm**: This is the outermost layer, which primarily develops into the nervous system and skin.
- **Mesoderm**: This middle layer gives rise to muscles, bones, and connective tissues.
- **Endoderm**: The innermost layer, which is crucial for forming the gastrointestinal tract and associated organs.

3. **Identifying the Organs**: The liver and pancreas are both organs that are part of the digestive system. They are specifically derived from the endoderm layer during the process of organogenesis.

4. **Conclusion**: Since both the liver and pancreas develop from the endoderm, the correct answer to the question "Liver and pancreas develop from" is option B: endoderm.

**Final Answer**: Option B - Endoderm.

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