Which one 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 determine which statement is correct among the given options, we will analyze each statement step by step.

### Step-by-Step Solution:

1. **Analyze the First Statement:**
- The first statement claims that "endothelium produces the microspores."
- **Explanation:** The endothelium does play a role in the development of pollen grains, but it does not directly produce microspores. Instead, it secretes materials essential for the maturation of pollen grains. Therefore, this statement is incorrect.

2. **Analyze the Second Statement:**
- The second statement says, "teptum nourishes the developing pollen."
- **Explanation:** The teptum is indeed responsible for providing nourishment to the developing pollen grains. It is found in the sporangium and is crucial for the growth of the embryo. This statement is correct.

3. **Analyze the Third Statement:**
- The third statement claims that "the hard outer layer of pollen is called intine."
- **Explanation:** This statement is incorrect because the hard outer layer of pollen is known as the exine, while intine is the inner layer of the pollen grain.

4. **Analyze the Fourth Statement:**
- The fourth statement asserts that "sporogenous tissue is haploid."
- **Explanation:** This statement is also incorrect, as sporogenous tissue is diploid in nature. It gives rise to microspores through meiosis, which are haploid.

### Conclusion:
After analyzing all four statements, the only correct statement is the second one: "teptum nourishes the developing pollen."

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

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