One of the following group eliminates uric acid

Options

A. fishes
B. amphibians
C. birds
D. mammals

Answer

To solve the question "One of the following group eliminates uric acid," we will analyze each option provided.

### Step-by-Step Solution:

1. **Understanding the Groups**:
- We have four groups to consider: Fishes, Amphibians, Birds, and Mammals.

2. **Analyzing Fishes**:
- Fishes are aquatic animals and primarily excrete ammonia as their nitrogenous waste. Ammonia is highly soluble in water and requires a large amount of water for its excretion.
- **Conclusion**: Fishes do not eliminate uric acid. (Incorrect option)

3. **Analyzing Amphibians**:
- Amphibians can be either aquatic or terrestrial. Aquatic amphibians typically excrete ammonia (monotelic), while terrestrial amphibians excrete urea (ureotelic).
- **Conclusion**: Amphibians do not primarily eliminate uric acid. (Incorrect option)

4. **Analyzing Birds**:
- Birds are classified as uricotelic organisms. This means they excrete uric acid as their nitrogenous waste. Uric acid is less toxic and requires less water for excretion compared to ammonia or urea.
- **Conclusion**: Birds eliminate uric acid. (Correct option)

5. **Analyzing Mammals**:
- Mammals, including humans, are ureotelic, meaning they primarily excrete urea as their nitrogenous waste.
- **Conclusion**: Mammals do not eliminate uric acid. (Incorrect option)

### Final Answer:
The correct group that eliminates uric acid is **Birds**.