Which one is uricotelic ?

Options

A. Frog and toads
B. Lizards and birds/Cockroach
C. Cattle, monkey and man
D. Molluscs and teleost fishes

Answer

To determine which organisms are uricotelic, we need to understand what uricotelism is and identify the organisms that fit this classification.

### Step-by-Step Solution:

1. **Define Uricotelism**:
- Uricotelism is a type of nitrogenous waste excretion where organisms excrete uric acid or its salts. This method is advantageous for conserving water, making it suitable for organisms living in arid environments.

2. **Identify the Options**:
- The options provided are:
- a) Frog and toads
- b) Lizards and birds
- c) Lizard and birds
- d) Cockroach
- e) Cattle, monkey, and man
- f) Mollusk and teleost fishes
- g) Fishes

3. **Analyze Each Option**:
- **Frog and Toads**: These are ureotelic, meaning they excrete urea.
- **Lizards and Birds**: Both of these groups are uricotelic as they excrete uric acid.
- **Cockroach**: This insect also excretes uric acid, making it uricotelic.
- **Cattle, Monkey, and Man**: These are ureotelic as they primarily excrete urea.
- **Mollusk and Teleost Fishes**: These are ammonotelic, excreting ammonia.
- **Fishes**: Most fishes are also ammonotelic.

4. **Conclusion**:
- The organisms that are uricotelic from the options provided are **lizards, birds, and cockroaches**. Therefore, the correct answer is **lizards and birds, cockroach**.

### Final Answer:
The organisms that are uricotelic are **lizards and birds, cockroach**.

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