Tunica corpus theory was proposed by

Options

A. Schmidt
B. Strasburger
C. Negeli
D. Hofineister

Answer

### Step-by-Step Text Solution:

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

2. **Identifying the Proposer**: The Tunica Corpus theory was proposed by Schmidt in the year 1927.

3. **Explaining the Theory**: The theory is based on the structure of the apical meristem of the shoot (or stem). It divides the meristem into two main parts:
- **Tunica**: This refers to the outer layer of the apical meristem.
- **Corpus**: This is the inner layer of the apical meristem.

4. **Further Division of Corpus**: The corpus itself is further divided into two parts:
- **Procambium**: This part is responsible for the formation of vascular tissues.
- **Terrestrial Meristem**: This part contributes to the growth of the plant.

5. **Evaluating the Options**: The question likely provides multiple-choice options. The correct answer is:
- **Option 1: Schmidt** (the proposer of the Tunica Corpus theory).
- The other options (Strasbourg, Negevi, Hopfmister) relate to different theories and are not correct in this context.

6. **Conclusion**: Therefore, the answer to the question is that the Tunica Corpus theory was proposed by Schmidt.