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Endothermic and Endothermic and Ectothrmic AnimalsEctothrmic Animals
SC 6-3.3
Vertebrate AnimalsVertebrate Animals
All animals respond to changes in the environmental temperature.
Vertebrate animals differ in their abilities to regulate body temperature.
Vertebrate AnimalsVertebrate Animals
There are two different types of vertebrate animals, and they respond changes in temperature based on this type.
Two types of vertebrates: ◦Endothermic (warm-blooded)◦Ectothermic (cold-blooded)
Endothermic AnimalsEndothermic Animals
Animals which maintain a nearly constant internal temperature and do not change with the environment.
When the outside temperature is too hot, an endothermic animal can cool off by
◦Sweating◦Panting◦Changing Position◦Changing Location
Endothermic AnimalsEndothermic Animals
Sweating and panting generate heat loss through evaporating water.
Changing position and location allow the animal to find a cooler environment in the shade or shelter.
Endothermic AnimalsEndothermic Animals
Endothermic animals must eat much more often than ectothermic animals since it takes energy to maintain a constant body temperature.
Example: ◦A lion must eat its weight in food every seven
to ten days.
Endothermic AnimalsEndothermic Animals
Types of Endothermic animals:
◦Birds
◦Mammals
Endothermic AnimalsEndothermic Animals
Ectothermic AnimalsEctothermic Animals
Animals which have an internal body temperature that changes with the temperature of the environment.
They must gain heat to perform internal activities.
◦Example: Digestion
Ectothermic AnimalsEctothermic Animals
If the environment is cold, ectothermic animals become slow moving and sluggish.
Some animals must bask in the Sun.◦Example: Snakes or Lizzards
Some animals must move to a warmer area before they can move about or hunt for food. ◦Example: Some Fish
Ectothermic AnimalsEctothermic Animals
If the temperature is too hot, ectothermic animals will need to find a cooler temperature or burrow into the ground to keep its body cool.
Ectothermic AnimalsEctothermic Animals
Ectothermic animals take on the temperature of their surroundings so they don’t have to use food energy to keep warm.
◦This means they don’t have to eat as often.
Ectothermic AnimalsEctothermic Animals
Types of Ectothermic Animals:
◦Fish
◦Amphibians
◦Reptiles
Ectothermic AnimalsEctothermic Animals
Venn DiagramVenn Diagram