an ectothermal cold blooded animal is

Options

A. penguin
B. lemur
C. owl
D. frog

Answer

### Step-by-Step Solution:

1. **Understanding Ectothermal Animals**:
- Ectothermal animals, also known as cold-blooded animals, are those whose body temperature is regulated by external environmental conditions. This means they rely on external sources, such as sunlight or warm surfaces, to maintain their body temperature.

2. **Identifying the Options**:
- The options provided are penguin, lemur, owl, and frog. We need to determine which of these is ectothermal.

3. **Analyzing Each Option**:
- **Penguin**: Penguins are warm-blooded (endothermal) animals. They maintain a constant body temperature regardless of the environment.
- **Lemur**: Lemurs are also warm-blooded (endothermal) and regulate their body temperature internally.
- **Owl**: Owls are warm-blooded (endothermal) as well, maintaining their body temperature independently of the environment.
- **Frog**: Frogs are ectothermal (cold-blooded) animals. They rely on external heat sources to regulate their body temperature.

4. **Conclusion**:
- Among the given options, the only ectothermal (cold-blooded) animal is the **frog**.

### Final Answer:
The ectothermal cold-blooded animal is **frog**.

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