Which of the following set of plant shows autogamy ?

Options

A. Viola and Rose
B. Zostera and Rose
C. Zostera and Oxalis
D. Viola and Oxalis

Answer

To solve the question of which set of plants shows autogamy, we need to understand the concept of autogamy and analyze the given options.

### Step-by-Step Solution:

1. **Understand Autogamy**:
- Autogamy is a type of self-pollination where pollen grains from the anther of a flower fertilize the stigma of the same flower. This means that the transfer of pollen occurs within the same flower.

2. **Analyze the Options**:
- **Option 1: Viola and Rose**:
- Viola is known to exhibit autogamy, but Rose typically does not self-pollinate as it often requires cross-pollination.
- **Option 2: Joistra and Rose**:
- Joistra plants primarily rely on water for pollination, and Rose again does not favor self-pollination. Hence, this option is incorrect.
- **Option 3: Joistra and Auxilis**:
- Joistra does not show autogamy, and Auxilis is not commonly known for self-pollination either. This option is also incorrect.
- **Option 4: Viola and Auxilis**:
- Viola is known to exhibit autogamy, and Auxilis can also show self-pollination characteristics. Therefore, this option is likely correct.

3. **Conclusion**:
- After analyzing all the options, the correct answer is **Viola and Auxilis**, as both plants are known to show autogamy.

### Final Answer:
**Viola and Auxilis** show autogamy.