The outermost and innnermost wall layers of microsporangium in an anther are respectively

Options

A. endothecium and tapetum
B. epdermis and endoderrilis
C. epidermis and middle layer
D. epidermis and tapetum

Answer

To answer the question regarding the outermost and innermost wall layers of the microsporangium in an anther, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Structure of the Anther**:
- The anther is a part of the stamen in flowering plants and contains microsporangia where pollen grains are produced.

2. **Identifying the Layers of the Microsporangium**:
- The microsporangium has several layers, which include:
- Outermost layer
- Several middle layers
- Innermost layer

3. **Determining the Outermost Layer**:
- The outermost layer of the microsporangium is known as the **epidermis**. This layer serves as a protective covering.

4. **Determining the Innermost Layer**:
- The innermost layer of the microsporangium is called the **tapetum**. This layer is responsible for nourishing the developing pollen grains.

5. **Final Answer**:
- Therefore, the outermost wall layer of the microsporangium in an anther is the **epidermis**, and the innermost wall layer is the **tapetum**.

### Conclusion:
- The answer to the question is:
- **Outermost layer**: Epidermis
- **Innermost layer**: Tapetum