Which of the following statements is false regarding the nitrogenous wastes

Options

A. Urea is more toxic than ammonia
B. Ammonia is converted to urea in liver
C. Ammonia is produced in the body cells by the metabolism of proteins
D. Fluid collected in Bowman's capsule is called glomerular fluid

Answer

### Step-by-Step Solution:

1. **Understanding Nitrogenous Wastes**:
- Nitrogenous wastes are byproducts of protein metabolism. The three main types are ammonia, urea, and uric acid.

2. **Toxicity of Nitrogenous Wastes**:
- Ammonia is the most toxic nitrogenous waste. It is highly soluble in water and requires a large amount of water for excretion.
- Urea is less toxic than ammonia and is formed in the liver through the urea cycle (ornithine cycle).
- Uric acid is the least toxic and can be excreted with minimal water loss, making it suitable for organisms like birds and land snails.

3. **Analyzing the Statements**:
- The question asks which statement is false regarding nitrogenous wastes.
- One of the statements is: "Urea is more toxic than ammonia." This is incorrect because ammonia is significantly more toxic than urea.

4. **Confirming Other Statements**:
- Other statements such as "Ammonia is converted into urea in the liver" and "Ammonia is produced in the body by metabolism of protein" are true.
- The statement about the fluid collected in the Bowman's capsule being called glomerular fluid or filtrate is also correct.

5. **Identifying the False Statement**:
- Since the statement "Urea is more toxic than ammonia" is false, it is the correct answer to the question.

### Conclusion:
- The false statement regarding nitrogenous wastes is: "Urea is more toxic than ammonia."

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