Mark 'T' if the statement is true and 'F' if it is false:
The ruminants bring back swallowed grass into their mouth and chew it for some time. (T/F)

Answer

To determine whether the statement "The ruminants bring back swallowed grass into their mouth and chew it for some time" is true or false, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Ruminants**: Ruminants are a specific group of animals that include cows, goats, sheep, and deer. They have a unique digestive system adapted for breaking down tough plant materials, particularly cellulose found in grass.

2. **Digestive Process**: When ruminants eat grass, they initially swallow it without fully chewing it. This grass then enters a specialized stomach called the rumen, where it begins to ferment and break down.

3. **Regurgitation**: After some time, the partially digested grass is brought back into the mouth in a process known as "rumination." This is where the animal chews the grass again to further break it down.

4. **Chewing**: The act of chewing the regurgitated grass helps to break it down into smaller pieces, making it easier for the enzymes in the stomach to digest the cellulose.

5. **Conclusion**: Since ruminants do indeed bring back swallowed grass into their mouth and chew it for some time, the statement is true.

### Final Answer:
**T (True)**

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