Read the following questions carefully. Write the letter of the best answer on the blank. 1. Which of the following best describes an amphibian? A. Amphibians use their gills for breathing. B. Amphibians have fur and hair as body covering. C. Amphibians are ectoderm animals with feathers. D. Amphibians have moist, smooth and scale less skin. 2. One of the distinct characteristics of mammals is being an endothermic. What does it mean? A. Their body temperature does not change even when the temperature of the environment changes. B. The body temperature changes when the temperature of the environment changes. C. They cannot generate their own body temperature when the temperature of the environment changes. D. Some mammals can generate their body temperature even when the temperature of the environment changes.
Answer (1)
Answer:1. D. Amphibians have moist, smooth, and scaleless skin.Amphibians, such as frogs and toads, have characteristic smooth, moist skin without scales. They breathe through their skin and lungs.2. A. Their body temperature does not change even when the temperature of the environment changes.Endothermic (or homeothermic) organisms, like mammals and birds, maintain a relatively constant body temperature despite changes in the environment. This is in contrast to ectothermic organisms, which rely on external sources of heat.
