WorksheetsEchinoderms Quiz
Total questions: 20
Worksheet time: 10mins
What does “echinoderm” mean?
Soft body
Spiny skin
Water animal
Five legs
Which organism is an echinoderm?
Jellyfish
Crab
Sea Star
Sponge
What system do echinoderms use for movement and feeding? (NGSS: Structures & Functions)
Digestive system
Water vascular system
Muscular foot
Gills
Tube feet help echinoderms mainly by:
Producing oxygen
Allowing movement and suction
Making food
Storing water
Adult echinoderms show which type of symmetry? (NGSS: Patterns)
Bilateral
Spiral
Radial
Segmented
Which echinoderm can eject its internal organs as a defense?
Sea cucumber
Sea star
Sea urchin
Sand dollar
Sea urchins use “Aristotle’s lantern” for:
Eating and scraping algae
Swimming
Breathing
Sound communication
What do most sea stars eat?
Fish
Bivalves like clams
Plankton
Coral
How do sea stars open a clam? (NGSS: Structure & Function cause-effect)
Drill holes
Inject venom
Pry shell open with tube feet
Crush it with spines
Which process best explains how echinoderms regrow lost arms? (NGSS: LS1.B Growth & development)
Photosynthesis
Regeneration
Fermentation
Reflection
Echinoderms are most closely related to which group? (NGSS: Evolution & common ancestry)
Arthropods
Chordates
Mollusks
Cnidarians
Which echinoderm moves the fastest?
Sea cucumber
Brittle star
Sea urchin
Sand dollar
What helps sea stars sense light?
Gills
Eyespots at arm tips
Nose
Spines
Why are echinoderms important to ocean ecosystems? (NGSS: LS2 Ecosystems)
They pollinate coral
They recycle nutrients and control prey populations
They produce oxygen
They warm the water
Sea cucumbers help the ocean environment by:
Creating coral reefs
Filtering and cleaning sediments
Hunting fish
Releasing toxins
What evidence shows echinoderms are successful survivors? (NGSS: Evolution)
They live only in reefs
They are recent organisms
They have many body plan adaptations
They do not reproduce
What type of skeleton do echinoderms have?
Exoskeleton
Endoskeleton made of calcium plates
Cartilage
Bone
Sea stars can feed outside their body by:
Spitting enzymes into water
Pushing their stomach into prey
Using electricity
Filtering water
Why does radial symmetry benefit a sea star? (NGSS: Structure & Function)
Helps it swim fast
Allows equal movement in all directions
Makes it heavier
Helps it camouflage only on sand
What does the video mean by calling echinoderms “ultimate animals”?
They are largest animals
They have unique adaptations and diverse forms
They live forever
They rule the ocean
