Invertebrates

Where do Echinoderms live?

• in salt water

• in fresh water

• in salt water nd fresh water

• on land

What is the circulatory system in Echinoderms called?

• A complex system

• a water based vascular system

• a saline based system

• a blood based system

How many legs does a Sea star have?

• 2

• 5

• 7

• 8

What is the symmetry in modern echinoderms called?

• bilateral symmetry

• lateral symmetry

• 5 part symmetry

• 10 part symmetry

Tags

NGSS.MS-LS4-2

What do all arthropods have?

• 6 legs

• 8 legs

• stiff legs

• jointed legs

True or false. Every arthropod has an exoskeleton.

• true

• false

For every human on earth there are about ____________ arthropods.

• 20

• 200

• 300 million

• 1 billion

What is the exoskeleton composed of?

• Calcium

• Chitin

• Lead

• Magnesium

True or false. All mollusks are cemented permanently to the ground

• true

• false

What are the three body parts of a mollusk?

• the foot, mantle and toe

• the foot, mantle and radula

• the mantle, sleeve and toe

• the mantle, sleeve and toe