Structures of Living Things

True or False: All structures are made by humans.

• True

• False

Is the skin an internal or an external structure?

• Internal

• External

Is the heart an internal or external structure?

• Internal

• External

Are the eyes an internal or external structure?

• Internal

• External

Are the lungs an internal or external structure?

• Internal

• External

Is the brain an internal or external structure?

• Internal

• External

Are claws an internal or external structure?

• Internal

• External

What is the function of the water monitor lizards claws?

• digging

• climbing

• catching prey

• all of the above

Very __________ seeds might allow the seeds to be carried by the wind easily.

• Small

• Large

Very __________ seeds provide a plant with additional nutrients to grow.

• Small

• Large