Which one of the following statements is correct

Options

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

Answer

To determine which statement is correct regarding the structures and functions associated with microsporangia and pollen grains, we will analyze each statement step by step.

### Step-by-Step Solution:

1. **Analyze the first statement: "Sporogenous tissue is protective in function."**
- Sporogenous tissue is a group of homogeneous cells located in the center of each microsporangium.
- Its primary function is to undergo meiotic division to form haploid spores, not to provide protection.
- **Conclusion:** This statement is incorrect.

2. **Analyze the second statement: "Endothecium produces the microspores."**
- The endothecium is one of the layers of the microsporangium.
- The layers of the microsporangium include the epidermis, endothecium, middle layer, and tapetum.
- The endothecium serves a protective role and does not produce microspores; instead, microspores are produced by the sporogenous tissue.
- **Conclusion:** This statement is also incorrect.

3. **Analyze the third statement: "Tapetum nourishes the developing pollen grains."**
- The tapetum is the innermost layer of the microsporangium and is responsible for providing nutrition to the developing pollen grains.
- This statement accurately describes the function of the tapetum.
- **Conclusion:** This statement is correct.

4. **Analyze the fourth statement: "Hard outer layer of pollen is called enzyme."**
- The hard outer layer of pollen is known as "exine," not "enzyme."
- Therefore, this statement is incorrect.
- **Conclusion:** This statement is incorrect.

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

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