Invertebrate Vocabulary

What are sponges?

• Symmetrical invertebrates

• Asymmetrical invertebrates that live in water, are sessile, and have specialized cells to filter feed

• Invertebrates with a soft body

• Invertebrates with an exoskeleton

What are segmented worms?

• Worms with a body that is divided into many links, called segments

• Worms with a soft body

• Worms with an exoskeleton

• Worms with tube feet

What are echinoderms?

• Radially symmetrical marine invertebrates with an endoskeleton and tube feet

• Asymmetrical invertebrates

• Invertebrates with a soft body

• Invertebrates with an exoskeleton

What is an endoskeleton?

• An internal skeleton, structural support system within the body of an animal

• An external skeleton

• A soft body covering

• A segmented body

What are mollusks?

• Invertebrates with a soft, unsegmented body, most are protected by a hard outer shell

• Invertebrates with an exoskeleton

• Invertebrates with tube feet

• Invertebrates with a segmented body

What are arthropods?

• Invertebrates that have an exoskeleton, a segmented body, and jointed appendages

• Invertebrates with a soft body

• Invertebrates with tube feet

• Invertebrates with an endoskeleton

What is molting?

• The process of shedding an outgrown exoskeleton

• The process of growing a new exoskeleton

• The process of developing tube feet

• The process of segmenting the body