Endothecium, middle layer and tapetum in anther are derived from :-

Options

A. Primary sporogenous cells
B. Primary parietal cells
C. Both
D. None of the above

Answer

To determine the origin of the endothecium, middle layer, and tapetum in the anther, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Structure of Anther**: The anther is a part of the stamen in flowering plants and consists of several layers, including the endothecium, middle layer, and tapetum.

2. **Identifying the Cell Types**: The endothecium, middle layer, and tapetum are derived from specific types of cells in the anther. The question provides options for the origin of these layers.

3. **Primary Parietal Cells**: The primary parietal cells are the outermost layer of the anther's tissue. These cells undergo division to form the layers of the anther.

4. **Formation of Anther Layers**:
- The outer layer of the primary parietal cells develops into the **endothecium**.
- The middle layer is formed from the **middle layer** of the primary parietal cells.
- The inner layer of the primary parietal cells develops into the **tapetum**, which serves as a nutritive tissue for developing pollen grains.

5. **Conclusion**: Since the endothecium, middle layer, and tapetum are all derived from the primary parietal cells, the correct answer to the question is **primary parietal cells**.

### Final Answer:
The endothecium, middle layer, and tapetum in the anther are derived from **primary parietal cells**.

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