Main Idea Practice Test
•15 QuestionsThe chameleon's ability to change color is a famous example of adaptation, but the reasons for it are often misunderstood. While it is true that chameleons can use color change for camouflage, blending in with their surroundings to hide from predators or prey, this is not its primary function. The most significant use of this ability is for social signaling and regulating body temperature. A male chameleon might display bright, bold colors to intimidate a rival or attract a mate. A dark color, on the other hand, can help the cold-blooded reptile absorb more heat from the sun on a cool morning, while a lighter shade can reflect sunlight to prevent overheating. The color change is not a conscious choice but a physiological response to mood, temperature, and light, controlled by specialized cells in the skin called chromatophores.
What is the main idea of the passage?
What is the main idea of the passage?