Animal Structures & Functions Test

Animals that use a nerve net do not have 

• eyes.
• a brain.
• muscles.
• symmetry.

Which animal has an endoskeleton and an exoskeleton?

• a crab.
• a turtle.
• a lobster.
• an earthworm.

_____ are baglike organs that fill with air.

• Gills
• Capillaries
• Lungs
• Oxygen

All cells need nutrients and _____ to survive.

• gills
• capillaries
• lungs
• oxygen

Tags

NGSS.MS-LS1-5

NGSS.MS-LS1-6

_____ enable gas exchange for aquatic animals

• gills
• capillaries
• lungs
• oxygen

Small blood vessels called _____ surround organs and transport oxygen to cells.

• gills
• capillaries
• lungs
• oxygen

An automatic response that does not require a message from the brain is

• a reflex.
• cognitive behavior.
• a fight-or-flight response.
• hibernation.

Which activity is an innate behavior?

• estivation
• imprinting
• conditioning
• trial and error

Behaviors are ways in which animals maintain

• stress.
• change.
• homeostasis.
• reflexes.

A group of animals of the same species that live and work together in an organized way is a 

• family.
• society.
• territory.
• majority.