Organisms that can regulate their body temperature and remain constant irrespective of surroundings are called

Options

A. Homeotherms
B. Warm blooded animals
C. Poikilotherms
D. Both (1) & (2)

Answer

To solve the question regarding organisms that can regulate their body temperature and maintain it constant regardless of their surroundings, we can follow these steps:

### Step 1: Understand the Definition
- The question asks for organisms that can maintain a constant internal body temperature despite changes in the external environment.

### Step 2: Identify the Types of Organisms
- There are two main categories of organisms based on their temperature regulation:
1. **Homeotherms (Warm-blooded animals)**: These organisms can regulate their body temperature internally. Their internal temperature remains constant regardless of the external temperature.
2. **Poikilotherms (Cold-blooded animals)**: These organisms cannot regulate their internal body temperature and their temperature varies with the external environment.

### Step 3: Examples of Homeotherms
- Homeotherms include birds and mammals. They have physiological mechanisms that allow them to maintain a stable internal temperature, such as sweating, shivering, and altering blood flow.

### Step 4: Conclusion
- Based on the definitions and examples, the organisms that can regulate their body temperature and remain constant irrespective of their surroundings are known as **Homeotherms** or **Warm-blooded animals**.

### Final Answer
- The correct answer is **Homeotherms**.

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