In yeasts , two yeasts, two organisms fuse together. This type of syngamy is called

Options

A. Isogamy
B. Anisogamy
C. Oogarmy
D. Hologamy

Answer

To solve the question regarding the type of syngamy that occurs in yeasts when two organisms fuse together, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Syngamy**: Syngamy refers to the fusion of two gametes during sexual reproduction. In the context of yeasts, we need to identify the specific type of syngamy that occurs when two yeast organisms fuse.

2. **Identifying the Options**: The options given are:
- Isogamy
- Anisogamy
- Oogamy
- Hologamy

3. **Analyzing Each Option**:
- **Isogamy**: This type involves the fusion of similar motile gametes. While yeasts can reproduce this way, it is not the correct term for the fusion of two whole organisms.
- **Anisogamy**: This refers to the fusion of gametes that are of different sizes. It typically involves a larger female gamete and a smaller male gamete, which does not apply to the scenario of two yeast organisms fusing.
- **Oogamy**: This is a specific type of anisogamy where the female gamete is large and non-motile, and the male gamete is smaller and motile. This is not applicable to the fusion of two yeast organisms.
- **Hologamy**: This is the correct term for the type of syngamy where two mature individuals (in this case, yeasts) fuse together to form a zygote without the formation of distinct gametes.

4. **Conclusion**: Based on the definitions and analysis, the correct answer to the question is **hologamy**.

### Final Answer:
The type of syngamy in yeasts where two organisms fuse together is called **hologamy**.