Tunica corpus theory was proposed by

Options

A. Schmidt
B. negeli
C. Hanstein
D. Wolf

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the origin of the Tunica-Corpus theory, specifically who proposed it.

2. **Identifying the Key Concept**: The Tunica-Corpus theory is a concept in plant anatomy that describes the structure and growth of the shoot apex in flowering plants.

3. **Historical Context**: The theory was proposed by a German scientist, which is crucial for narrowing down the options provided.

4. **Reviewing the Options**: The options given are:
- A) Schmidte
- B) Nageli
- C) Entrain
- D) Bolk

5. **Identifying the Correct Scientist**: The Tunica-Corpus theory was proposed by Eschmedet (often spelled as Schmidte in some contexts) in 1924. This scientist described the structure of the shoot apex, detailing the tunica and corpus layers.

6. **Conclusion**: Based on the information, the correct answer is option A) Schmidte.

**Final Answer**: The Tunica-Corpus theory was proposed by Schmidte.

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