Based on function meristems are classified by

Options

A. Strasburger
B. Nageli
C. Schmidt
D. Haberlandt

Answer

**Step-by-Step Solution:**

1. **Understanding Meristems**: Meristems are regions in plants where cells remain undifferentiated and can divide to form new cells. They are crucial for plant growth and development.

2. **Classification of Meristems**: Meristems can be classified based on their function. The main types include:
- **Apical Meristems**: Located at the tips of roots and shoots, responsible for primary growth (lengthening).
- **Lateral Meristems**: Responsible for secondary growth (thickening), such as the vascular cambium and cork cambium.
- **Intercalary Meristems**: Found at the base of leaves or internodes, facilitating growth in length.

3. **Identifying the Correct Scientist**: The question asks for the scientist who classified meristems based on their function.
- **Strasburger**: Known for his work on the embryonic sac in gymnosperms, not related to meristem classification.
- **Nageli**: Distinguished plant cell walls but did not classify meristems.
- **Smith**: Conducted experiments on soft matters, not specifically on meristems.
- **Haverland**: Classified meristems into categories based on their functions, making him the correct choice.

4. **Conclusion**: Based on the analysis, the correct answer to the question is **Haverland**, as he is the scientist who classified meristems based on their function.

**Final Answer**: Haverland

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