ANATOMY

Detailed explanation-1: -Animals that cannot generate internal heat are known as poikilotherms (poy-KIL-ah-therms), or cold-blooded animals. Insects, worms, fish, amphibians, and reptiles fall into this category-all creatures except mammals and birds.

Detailed explanation-2: -ectotherm, any so-called cold-blooded animal-that is, any animal whose regulation of body temperature depends on external sources, such as sunlight or a heated rock surface. The ectotherms include the fishes, amphibians, reptiles, and invertebrates.

Detailed explanation-3: -Examples of cold-blooded animals are reptiles, fish, etc. Warm-blooded animals are defined as animals that can regulate and maintain constant internal body temperature. They can survive in any temperature range as they can adapt to it easily. Mammals are the best examples of warm-blooded animals.

Detailed explanation-4: -Warm-blooded animals, such as mammals and birds, were able to maintain their body temperature regardless of the surroundings. Cold-blooded animals, such as reptiles, amphibians, insects, arachnids and fish, were not.

Detailed explanation-5: -Cold blooded animals are animals that regulate their body temperature by exchanging heat with their environment. Warm blooded animals are animals that maintain a constant body temperature by generating heat internally.