AP BIOLOGY

Detailed explanation-1: -Animals that cannot naturally regulate their body temperatures are considered to be ectothermic or cold-blooded. These animals use sources of heat outside of their own bodies to maintain their metabolic functions. Insects, arachnids, fish, reptiles, and amphibians are generally cold-blooded. Lizard is a reptile.

Detailed explanation-2: -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-3: -As cold-blooded animals, reptiles rely on external heat sources for thermoregulation. Being in their POTR affects a reptile in all aspects of their daily life.

Detailed explanation-4: -Reptiles are a class of vertebrates made up mostly of snakes, turtles, lizards, and crocodilians. These animals are most easily recognized by their dry, scaly skin. Almost all reptiles are cold-blooded, and most lay eggs-though some, like the boa constrictor, give birth to live young.