Almost all aquatic animals excrete ammonia as nitrogenous waste. Which is wrong

Options

A. Ammonia is highly toxic and requires elimination when formed
B. Ammonia is easily soluble in water
C. Ammonia is converted into less toxic form called urea
D. Ammonia is released from body in gaseous state

Answer

To solve the question regarding the statement about ammonia excretion in aquatic animals, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Nature of Ammonia**:
- Ammonia (NH3) is a nitrogenous waste product that is highly toxic. Aquatic animals often excrete ammonia directly into the water due to its high solubility.

2. **Toxicity of Ammonia**:
- Ammonia is considered the most toxic form of nitrogenous waste. It must be eliminated quickly from the body to prevent toxicity.

3. **Solubility of Ammonia**:
- Ammonia is highly soluble in water. This property allows aquatic animals to excrete it easily through diffusion into the surrounding water.

4. **Conversion of Ammonia**:
- In terrestrial animals, ammonia is converted into less toxic forms such as urea or uric acid. For example, mammals like humans convert ammonia into urea through the urea cycle in the liver.

5. **Evaluate the Statements**:
- The question asks which statement about ammonia is wrong.
- A key point is that ammonia is not released from the body in a gaseous state due to its solubility in water. Instead, it is excreted as a dissolved substance.

6. **Identify the Incorrect Statement**:
- The statement claiming that ammonia is released from the body in the gaseous state is incorrect. Ammonia is excreted in solution, not as a gas.

7. **Conclusion**:
- Therefore, the wrong statement about ammonia is that it is released from the body in the gaseous state.

### Final Answer:
The wrong statement about ammonia is that it is released from the body in the gaseous state.

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