Staying Alive
Animals that cannot regulate their body temperature internally are called this.
Answer: What are ectotherms?
This support system is found inside vertebrates.
Answer: What is an endoskeleton?
This type of circulatory system uses blood vessels to keep blood contained.
Answer: What is a closed circulatory system?
This process allows oxygen to enter the body and carbon dioxide to leave.
Answer: What is respiration?
Breaking food into smaller pieces using teeth or grinding organs is called this.
Answer: What is mechanical digestion?
An ectotherm warming itself on a rock is an example of this behavior.
Answer: What is moving to regulate temperature?
This type of skeleton also stores important minerals like calcium.
Answer: What is an endoskeleton?
This type of circulatory system bathes organs directly in fluid.
Answer: What is an open circulatory system?
Insects breathe using a network of tubes called this.
Answer: What are tracheae?
Using enzymes and acids to break food into nutrients is called this.
Answer: What is chemical digestion?
This term describes organisms that stay attached to one place, like barnacles.
Answer: What is sessile?
Earthworms rely on this type of skeleton that uses fluid pressure.
Answer: What is a hydrostatic skeleton?
Fish have this number of heart chambers.
Answer: What is two?
These small openings along an insect’s body allow air to enter.
Answer: What are spiracles?
This organ grinds food in birds and earthworms.
Answer: What is the gizzard?
Birds and mammals regulate body temperature using internal processes.
Answer: What are endotherms?
Arthropods grow by shedding this structure.
Answer: What is an exoskeleton?
Mammals and birds have hearts with this many chambers.
Answer: What is four?
Fish gills use these structures to increase surface area.
Answer: What are filaments?
This organ absorbs nutrients after digestion.
Answer: What is the intestine?
This is one reason animals move from place to place besides temperature control.
Answer: What is finding food, mates, or shelter?
The movement of an organism from one place to another is called this.
Answer: What is locomotion?
These tiny blood vessels connect arteries and veins.
Answer: What are capillaries?
This muscle helps mammals inhale air into their lungs.
Answer: What is the diaphragm?
These specialized cells send electrical signals throughout the body.
Answer: What are neurons?