Endothermic and Ectothermic Animals

The video tutorial explains the differences between endothermic (warm-blooded) and ectothermic (cold-blooded) animals, focusing on how they regulate body temperature and their energy use. It covers metabolism, advantages and disadvantages of each type, and provides examples of animals in both categories. The video also discusses how temperature affects metabolism and pain perception, using practical examples like wetsuits and blankets to illustrate concepts.

What is the primary source of energy for animals to perform work?

• Minerals

• Calories

• Vitamins

• Proteins

Which of the following is a characteristic of ectothermic animals?

• They generate their own body heat.

• They rely on external temperatures for body heat.

• They need to eat frequently to maintain energy.

• They have a constant body temperature.

Which group of animals is primarily endothermic?

• Fish

• Birds and mammals

• Amphibians

• Reptiles

What is a disadvantage of being an endothermic animal?

• Inability to regulate body temperature

• Limited to warm climates

• Requires constant food intake

• Slow metabolism in cold environments

Why can endothermic animals live in a wider range of environments compared to ectothermic animals?

• They can hibernate during cold seasons.

• They rely on external heat sources.

• They can regulate their internal temperature.

• They have a slower metabolism.

How does a lizard's metabolism change with temperature?

• It slows down as the temperature increases.

• It speeds up as the temperature increases.

• It speeds up in the morning and slows down in the afternoon.

• It remains constant regardless of temperature.

What happens to a lizard when it is exposed to cold temperatures?

• It feels pain and becomes active.

• It generates more heat to stay warm.

• It starts to eat more to generate energy.

• Its metabolism slows down and it becomes lethargic.

Why doesn't wrapping a lizard in a blanket help it warm up?

• Lizards do not emit heat to be trapped by the blanket.

• Blankets are not effective insulators.

• Lizards generate their own heat.

• Blankets only work in warm environments.

How does a wetsuit help maintain body temperature in cold water?

• It absorbs heat from the sun.

• It prevents water from touching the skin.

• It traps a layer of water that is warmed by the body.

• It generates heat through friction.

What is the main reason endothermic animals are more adaptable to different climates?

• They require less food in colder climates.

• They can change their diet easily.

• They have a higher tolerance for pain.

• They can maintain a stable internal temperature.