Ureotelic animals are those in which the main nitrogenous waster product is

Options

A. Amino acid
B. Urea
C. Uric acid
D. Ammonia

Answer

**Step-by-Step Solution:**

1. **Understanding Ureotelic Animals**: Ureotelic animals are those that primarily excrete urea as their main nitrogenous waste product. This classification is based on the type of nitrogenous waste they produce.

2. **Identifying Nitrogenous Waste Products**: The common nitrogenous waste products include:
- **Amino Acids**: These are not waste products; they are the building blocks of proteins.
- **Urea**: This is produced from the breakdown of proteins and is less toxic than ammonia.
- **Uric Acid**: This is produced by uricotelic animals and is less toxic and less soluble in water.
- **Ammonia**: This is highly toxic and is excreted by ammonotelic animals.

3. **Analyzing the Options**:
- **Amino Acids**: Incorrect, as they are not waste products.
- **Urea**: Correct, as it is the main nitrogenous waste product of ureotelic animals.
- **Uric Acid**: Incorrect, as it is the main waste product of uricotelic animals.
- **Ammonia**: Incorrect, as it is the main waste product of ammonotelic animals.

4. **Conclusion**: Based on the analysis, the main nitrogenous waste product of ureotelic animals is **urea**.

**Final Answer**: Ureotelic animals are those in which the main nitrogenous waste product is **urea**.

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