Which of the following statements is correct ?

Options

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

Answer

To solve the question, we need to analyze each of the given statements regarding the structures associated with the microsporangium and determine which one is correct.

### Step-by-Step Solution:

1. **Understanding Microsporangium Structure**:
- The microsporangium consists of several layers: epidermis, endothecium, middle layers, and tapetum.
- The primary functions of these layers include protection and dehiscence (the process of releasing pollen grains).

2. **Evaluating Each Option**:
- **Option 1**: "Endothecium produces the microspores."
- The endothecium is not responsible for producing microspores; it aids in the dehiscence process. Therefore, this statement is **incorrect**.

- **Option 2**: "Tapetum nourishes the developing pollen."
- The tapetum is indeed responsible for nourishing developing pollen grains. It has dense cytoplasm and often contains more than one nucleus, which supports its role in providing nutrients. This statement is **correct**.

- **Option 3**: "Hard outer layer of pollen is known as intine."
- The hard outer layer of pollen is called the exine, while the intine is the inner layer. Therefore, this statement is **incorrect**.

- **Option 4**: "Sporogenous tissue is haploid."
- The sporogenous tissue is diploid, while the microspores produced from it are haploid. Thus, this statement is also **incorrect**.

3. **Conclusion**:
- After evaluating all options, the only correct statement is: "Tapetum nourishes the developing pollen."

### Final Answer:
The correct statement is: **Tapetum nourishes the developing pollen.**

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