Another term for cold-blooded animals is :

Options

A. Endotherm
B. Ectotherm
C. Homoiotherm
D. Thermoregulator

Answer

To answer the question "Another term for cold-blooded animals is:", we can follow these steps:

### Step 1: Understand the Terms
- Cold-blooded animals are those that cannot regulate their body temperature internally. Their body temperature varies with the environment.

### Step 2: Identify the Options
- The options provided are:
1. Endotherm
2. Ectotherm
3. Homoeroderm
4. Thermoregulator

### Step 3: Analyze Each Option
- **Endotherm**: This term refers to warm-blooded animals that can maintain a constant body temperature regardless of the environment. Therefore, this option is incorrect for cold-blooded animals.

- **Ectotherm**: This term is used for cold-blooded animals. Ectotherms rely on environmental heat sources to regulate their body temperature. This option is correct.

- **Homoeroderm**: This term is not commonly used in biology and is not applicable in this context. It is associated with warm-blooded animals, making it incorrect.

- **Thermoregulator**: This term refers to organisms that can regulate their body temperature. Since cold-blooded animals do not have this capability, this option is also incorrect.

### Step 4: Conclusion
- The correct answer is **Ectotherm**, which is another term for cold-blooded animals.

### Final Answer
**Ectotherm**

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