Quiescent centre in the middle of root apical meristem was discovered by

Options

A. nageli
B. schmidt
C. clowes
D. hanstein

Answer

To answer the question regarding who discovered the quiescent centre in the middle of the root apical meristem, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Concept**: The quiescent centre is a specific region within the root apical meristem that plays a crucial role in the growth and development of roots.

2. **Historical Context**: The discovery of the quiescent centre is linked to research conducted in the mid-20th century, specifically in the year 1953.

3. **Researcher Identification**: The researcher who proposed the term for this region was Frederick Albert Lionel Close.

4. **Location of Research**: Frederick Albert Lionel Close conducted his research at the School of Botany, which is now known as the Department of Plant Sciences at the University of Oxford.

5. **Terminology**: Initially, Close referred to this region as the "Cytogenerative Centre," which was later termed the "Quiescent Centre."

6. **Conclusion**: Therefore, the quiescent centre in the middle of the root apical meristem was discovered by Frederick Albert Lionel Close in 1953.

### Final Answer:
The quiescent centre in the middle of the root apical meristem was discovered by Frederick Albert Lionel Close in 1953.

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