Uricotelic mode of passing out nitrogenous wastes is found in

Options

A. birds and annelids
B. amphibians and reptiles
C. insects and amphibians
D. reptiles and birds

Explanation

### Step-by-Step Solution:

1. **Understanding Uricotelic Excretion**:
- Uricotelic organisms excrete nitrogenous waste primarily in the form of uric acid. This method of excretion is advantageous as it conserves water, which is crucial for survival in arid environments.

2. **Identifying Uricotelic Organisms**:
- Common examples of uricotelic animals include reptiles (like lizards and crocodiles) and birds (such as parrots and crows). These animals convert ammonia, which is highly toxic, into uric acid, which is less toxic and can be excreted with minimal water loss.

3. **Comparing with Other Modes of Excretion**:
- In contrast, amphibians primarily excrete ammonia, which is highly soluble in water, while mammals typically excrete urea. This highlights the differences in nitrogenous waste management among various animal groups.

4. **Conclusion**:
- Based on the information provided, the uricotelic mode of excretion is found in reptiles and birds.

### Final Answer:
Uricotelic mode of passing out nitrogenous wastes is found in reptiles and birds.

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