Invertebrate Biology Quiz

Which invertebrate group is characterized by having spiny endoskeletons?

• Arthropods

• Echinoderms

• Mollusks

• Cnidarians

What is the main characteristic of sponges?

• Jointed appendages

• Presence of pores in their body

• Hard shells

• Segmented bodies

What does the term "centipede" mean?

• A hundred feet

• A thousand feet

• Flatworm-like structure

• Spiral body

What is the purpose of nematocysts in cnidarians?

• Movement

• Defense and stinging

• Digestion

• Respiration

Which of the following is NOT an example of an arthropod?

• Crab

• Sea star

• Ant

• Millipede

Tags

NGSS.MS-LS4-2

Which body structure helps mollusks like snails scrape food into their mouths?

• Mandibles

• Radula

• Tube feet

• Spinnerets

What unique feature do echinoderms like sea stars have for movement?

• Jointed appendages

• Tube feet

• Mandibles

• Exoskeleton

How do arachnids differ from insects?

• They have antennae

• They have four pairs of legs

• They have three body regions

• They undergo metamorphosis

Tags

NGSS.MS-LS4-2

Which group of invertebrates includes animals with two body layers and radial symmetry?

• Mollusks

• Arthropods

• Cnidarians

• Crustaceans

What type of skeleton do sponges have?

• Calcium carbonate or silica spicules

• Exoskeleton

• Endoskeleton

• Cartilage