State whether the following statements are true of false regarding androecium .
I. The anther of all angiosperms has four theca.
II. The outermost layer of the microsporangium is the tepetum.
III. The distal end of the filament is attached to the stamen.
IV. Pollen grains of the same species differ from each other in their morphologies.

Options

A. 1 - True , 2 - True , 3 - True , 4 - False
B. 1 - False , 2 - False , 3 - False , 4 - True
C. 1 - False , 2 - False , 3 - True , 4 - False
D. 1 - True , 2 - False , 3 - False , 4 - True

Answer

To determine whether the statements regarding androecium are true or false, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Statement I: The anther of all angiosperms has four theca.**
- **Analysis:** This statement is **False**. The anther of most angiosperms typically has two theca (pollen sacs), not four. Some species may have variations, but the general rule is two theca.
- **Conclusion:** **False**

2. **Statement II: The outermost layer of the microsporangium is the tepetum.**
- **Analysis:** This statement is also **False**. The tepetum is actually the innermost layer of the microsporangium, which provides nourishment to developing pollen grains. The outermost layer is called the epidermis.
- **Conclusion:** **False**

3. **Statement III: The distal end of the filament is attached to the stamen.**
- **Analysis:** This statement is **True**. The distal end of the filament supports the anther, which is part of the stamen. Therefore, it is correct to say that the filament is attached to the stamen.
- **Conclusion:** **True**

4. **Statement IV: Pollen grains of the same species differ from each other in their morphologies.**
- **Analysis:** This statement is **False**. Pollen grains of the same species typically have a uniform morphology. While there can be minor variations due to environmental factors, they are generally consistent in structure within a species.
- **Conclusion:** **False**

### Summary of Statements:
- I: False
- II: False
- III: True
- IV: False

### Final Answer:
The correct option that summarizes these evaluations is: **False, False, True, False**.