Quiescent centre is found in
(a) Shoot apex
(b) Root apex
(c) Both a and b
(d) Meristematic tissue

Options

A. Shoot apex
B. Root apex
C. Both A and B
D. Meristematic tissue

Answer

To determine where the quiescent center is found, let's analyze the options provided:

1. **Understanding Quiescent Center (QC)**:
- The quiescent center is a small group of cells characterized by low mitotic activity. This means that these cells do not divide frequently and are relatively inactive compared to surrounding cells.

2. **Identifying the Location**:
- The quiescent center is primarily located at the root apex. It is surrounded by root meristematic tissues and root initial cells, which are responsible for the growth of the root.

3. **Evaluating the Options**:
- **Option A: Shoot apex** - The quiescent center is not found here. The shoot apex is involved in the growth of shoots and leaves, but it does not contain a quiescent center.
- **Option B: Root apex** - This is the correct option. The quiescent center is indeed found at the root apex.
- **Option C: Both A and B** - This option is incorrect because the quiescent center is not present in the shoot apex.
- **Option D: Meristematic tissue** - While the quiescent center is related to meristematic tissues, it is specifically located in the root apex.

4. **Conclusion**:
- Based on the analysis, the correct answer is **(b) Root apex**.