In a typical angiosperm anther

Options

A. each lobe having one theca
B. each lobe having four theca
C. is generally bilobed
D. is monothecous

Answer

### Step-by-Step Solution:

1. **Understanding the Structure of the Anther**:
- The anther is a part of the stamen, which consists of two main components: the filament and the anther itself.
- The anther is typically bilobed, meaning it has two distinct lobes.

2. **Drawing the Anther**:
- Visualize or draw the structure of the anther. It should show two lobes connected by the filament.
- Label the two lobes as Lobe 1 and Lobe 2.

3. **Identifying the Pollen Sacs**:
- Each lobe of the anther contains pollen sacs, also known as theca.
- In a typical angiosperm anther, each lobe has two pollen sacs (theca).

4. **Counting the Thecas**:
- Since there are two lobes and each lobe has two thecas, the total number of thecas in the anther is four (2 thecas per lobe x 2 lobes = 4 thecas).

5. **Evaluating the Options**:
- Option 1: Each lobe has one theca - **Incorrect** (each lobe has two thecas).
- Option 2: Each lobe has four theca - **Incorrect** (each lobe has two thecas).
- Option 3: Generally bilobed - **Correct** (the anther is bilobed).
- Option 4: It’s monothecus - **Incorrect** (monothecus means one theca, but there are four in total).

6. **Conclusion**:
- The correct answer is that in a typical angiosperm anther, the anther is bilobed.