Animals which excrete large amount of ammonia are

Options

A. Terrestrial
B. Amphibians
C. Egg laying
D. Aquatic

Answer

### Step-by-Step Solution:

1. **Understanding Excretory Products**:
- Animals excrete waste in various forms, primarily ammonia, urea, and uric acid. Each of these forms has different requirements for excretion.

2. **Properties of Ammonia**:
- Ammonia (NH3) is highly soluble in water but requires a large quantity of water for its excretion. This is a crucial factor in determining which animals excrete ammonia.

3. **Terrestrial Animals**:
- Terrestrial animals (land-dwelling) cannot excrete large amounts of ammonia because they do not have access to sufficient water to dissolve it. Therefore, they typically excrete urea or uric acid, which require less water.

4. **Amphibians**:
- Amphibians can live both on land and in water. While they can excrete ammonia when in water, they also have the ability to excrete urea when on land. Thus, they are not exclusively ammonia excreters.

5. **Egg-Laying Animals**:
- Egg-laying animals (like reptiles) typically live on land and do not have access to large amounts of water for excreting ammonia. They usually excrete uric acid.

6. **Aquatic Animals**:
- Aquatic animals, which live in water, can excrete large amounts of ammonia because they have the necessary water to dissolve and eliminate it efficiently. This makes them the primary group of animals that excrete ammonia.

7. **Conclusion**:
- Therefore, the animals that excrete large amounts of ammonia are primarily aquatic animals.

### Final Answer:
Aquatic animals excrete large amounts of ammonia.

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