Man is

Options

A. Ammonotelic
B. Ureotelic
C. Uricotelic
D. None of these

Answer

To determine the correct classification of humans based on the type of nitrogenous waste they excrete, we need to analyze the terms provided in the question: Ammonotallic, Ureotallic, and Uricotallic.

### Step-by-Step Solution:

1. **Understanding Nitrogenous Waste**:
- Nitrogenous waste refers to the waste products that result from the metabolism of proteins and nucleic acids. The main forms of nitrogenous waste are ammonia, urea, and uric acid.

2. **Definitions of Terms**:
- **Ammonotallic**: Organisms that excrete ammonia as their primary nitrogenous waste. Ammonia is highly toxic and requires a large amount of water for its excretion.
- **Ureotallic**: Organisms that excrete urea as their primary nitrogenous waste. Urea is less toxic than ammonia and requires less water for excretion.
- **Uricotallic**: Organisms that excrete uric acid as their primary nitrogenous waste. Uric acid is the least toxic and conserves water, making it suitable for organisms in arid environments.

3. **Examples of Organisms**:
- **Ammonotelic**: Examples include bony fishes, aquatic amphibians, and aquatic insects.
- **Ureotelic**: Examples include mammals, such as humans.
- **Uricotelic**: Examples include birds, reptiles, and snails.

4. **Classification of Humans**:
- Since humans are mammals and primarily excrete urea as their nitrogenous waste, they fall under the category of ureotelic organisms.

5. **Conclusion**:
- Therefore, the correct answer to the question "Man is" is **Ureotallic**.

### Final Answer:
Man is **Ureotallic**.