The first and largest chamber in the stomach of ruminants such as cattle, buffalo, sheep, goat, and camel is

Options

A. Reticulum
B. Rumen
C. Omasum
D. Abomasum

Answer

To answer the question about the first and largest chamber in the stomach of ruminants such as cattle, buffalo, sheep, goat, and camel, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Stomach Structure of Ruminants**:
- Ruminants have a specialized stomach structure that consists of four chambers: the rumen, reticulum, omasum, and abomasum.

2. **List the Chambers**:
- The four chambers are:
- Rumen
- Reticulum
- Omasum
- Abomasum

3. **Determine the Size and Order of the Chambers**:
- Among these chambers, the rumen is the first chamber and is also the largest.
- The reticulum is smaller than the rumen and is the second chamber.
- The omasum is the third chamber, and the abomasum is the fourth and is similar to a true stomach.

4. **Function of the Rumen**:
- The rumen plays a crucial role in the digestion of fibrous plant material. It houses a large population of anaerobic microbes that help break down cellulose into glucose.

5. **Conclusion**:
- Based on the information gathered, the first and largest chamber in the stomach of ruminants is the **Rumen**.

### Final Answer:
The first and largest chamber in the stomach of ruminants such as cattle, buffalo, sheep, goat, and camel is the **Rumen**.

---