Which one of the following statements is correct?

Options

A. Tapetum nourishes the developing pollen
B. Hard outer layer of pollen is called intine
C. Sporogenous tissue is haploid
D. Endothecium produces the microspores

Answer

To determine which statement is correct regarding the structure and function of the tapetum and other components of the anther, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Understanding the Tapetum**:
- The tapetum is the innermost layer of the anther wall (microsporangium). It plays a crucial role in nourishing the developing pollen grains (microspores).
- **Conclusion**: The first statement, "Tapetum nourishes the pollen grain," is correct.

2. **Analyzing the Structure of Pollen Grains**:
- Pollen grains have two layers: the outer layer called the exine and the inner layer called the intine. The exine is indeed hard and is made up of a substance called sporopollenin.
- **Conclusion**: The second statement, "Hard outer layer of pollen is called Entine," is incorrect because the hard outer layer is called exine, not intine.

3. **Examining the Sporogenous Tissue**:
- Sporogenous tissue is responsible for producing microspores through meiosis. This tissue is diploid (2n) and not haploid (n).
- **Conclusion**: The third statement, "Sporogenous tissue is haploid," is incorrect.

4. **Function of Endothelium**:
- The endothelium is a layer of the anther that provides protection and support. It does not produce microspores; instead, microspores are formed from the sporogenous tissue.
- **Conclusion**: The fourth statement, "Endothelium produces the microspore," is incorrect.

### Final Conclusion:
The only correct statement is the first one: "Tapetum nourishes the pollen grain."