Animal Structure and Function Practice

External structures are structures on the outside of an organism.

• True

• False

A mountain lion's _______ would be the evidence to support that it eats meat.

• whiskers

• teeth

• fur

What helps an alpaca survive in the cold mountains?

• hooves

• teeth

• fur

A sea urchin has ____________ for protection from predators.

• scales

• spines

• feathers

Scientists design everyday things after animal structures called biomimicry.

• True

• False

What system does this show?

• digestive system

• circulatory system

• respiratory system

What organs are the arrows pointing at?

• lungs

• heart

• kidneys

How many heart chambers do mammals have?

• 2

• 3

• 4

Food enters the body through the mouth and then moves through the ...

• large instestine

• esophagus

• trachea

Match the correct organs to the digestive system.  

• lungs, kidneys, skin

• heart, veins, and arteries

• stomach, esophagus, small intestine, large intestine

• lungs, trachea, bronchi