Man is

Options

A. Ammonotelic
B. Ureotelic
C. Uricotelic
D. None of the above

Answer

**Step-by-Step Solution:**

1. **Understanding the Terms**: First, we need to understand the terms monotelic, ureotelic, uricotelic, and none of the above.
- Monotelic refers to organisms that excrete only one type of nitrogenous waste.
- Ureotelic organisms primarily excrete urea.
- Uricotelic organisms primarily excrete uric acid.

2. **Identify the Nitrogenous Waste in Humans**: Humans primarily excrete urea as the main nitrogenous waste product. This is due to the metabolism of proteins and nucleic acids in the body.

3. **Process of Urea Formation**: The process of forming urea involves:
- Deamination: This is the removal of the amino group (NH2) from amino acids, resulting in the formation of ammonium ions (NH4+).
- Urea Cycle: The ammonium ions enter the urea cycle in the liver, where they are converted into urea.

4. **Transport and Excretion**: The urea produced in the liver is then transported through the bloodstream to the kidneys, where it is filtered and excreted in urine.

5. **Additional Nitrogenous Waste**: While humans do produce uric acid, it is in much smaller quantities compared to urea. Therefore, the primary nitrogenous waste product in humans is urea.

6. **Conclusion**: Based on the above information, we conclude that humans are ureotelic organisms.

**Final Answer**: Man is ureotelic (Option B).

---