Question

Which one of these animals is not a homeotherm ?

• A. Macropus
• B. Camelus
• C. Chelone
• D. Psittacula

Answer 1

The Correct Option is C

To determine which animal is not a homeotherm, we need to understand what homeothermy means. Homeotherms, also known as warm-blooded animals, can regulate and maintain their internal body temperature irrespective of external environmental conditions. Most mammals and birds are homeotherms.

Let's analyze the given options:

1. Macropus: This refers to kangaroos, which are mammals. Being warm-blooded, they are homeotherms.
2. Camelus: Camels are also mammals and are capable of maintaining a constant internal body temperature, making them homeotherms.
3. Chelone: This term refers to turtles. Turtles are reptiles, which are ectothermic (cold-blooded) animals. They cannot maintain a constant body temperature and rely on the external environment to regulate their body heat.
4. Psittacula: This refers to parrots, which are birds. Like all birds, they are capable of regulating their body temperature, making them homeotherms.

Therefore, among the given options, Chelone (turtles) is the animal that is not a homeotherm.

Thus, the correct answer is: Chelone.