Multiple choice

Which of the following are warm-blooded organisms?

  1. Fish

  2. Frogs

  3. Snakes

  4. Birds
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Warm-blooded (endothermic) organisms maintain a constant internal body temperature regardless of external conditions. Birds and mammals are the only two warm-blooded vertebrate classes. Fish, frogs (amphibians), and snakes (reptiles) are all cold-blooded (ectothermic), meaning their body temperature varies with the environment. Birds possess specialized insulation (feathers) and high metabolic rates to generate heat.

Keep practicing — related questions