NEET BIOLOGY

Detailed explanation-1: -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-2: -Ectotherms depend mainly on external heat sources, and their body temperature changes with the temperature of the environment.

Detailed explanation-3: -Amphibians and reptiles are ectotherms that control their body temperature through external sources such as basking in the sun to warm up. Ectotherms are sometimes known as “cold-blooded” animals, but this is not an accurate term since the blood of a snake basking on a hot rock during a summer afternoon is not cold.

Detailed explanation-4: -Mammals and birds are called endotherms. An endotherm is an animal that can control its internal body temperature. Endotherms’ body temperature is usually much warmer than the temperature of the environment and usually stays about the same temperature. Endotherms are called “warm-blooded” animals.

Detailed explanation-5: -These animals do not have the same mechanisms as endotherms to regulate their core body temperature – like sweating, shivering, or heat production. Instead, they move to different locations during the day to catch the sun or shade, depending on what the organism needs.