Font size
WorksheetsEchinoderms
Total questions: 31
Worksheet time: 18mins
A network of water filled canals with thousands of tubes connected to it.
tube feet
sea star
water vascular system
endoskeleton
An echinoderm with soft body and a leathery covering.
sea star
sand dollar
sea urchin
sea cucumber
Hollow thin walled tubes that each end in a suction cup
tube feet
tentacles
sand dollar
sea star
An echinoderm with fragile branched arms.
sea star
brittle star
sea urchin
sand dollar
Echinoderms have no head or brain.
True
False
Most echinoderms have an open circulatory system.
true
false
Sand dollars have radial symmetry.
true
false
A brittle star uses its flexible arms for movement.
true
false
How many species of echinoderms are living today?
3,000
4,000
6,000
5,000
What two echinoderms are able to regenerate?
Sand dollar and sea urchin
brittle star and sea star
What is the process of regeneration?
When an animal sheds its exoskeleton.
When an animal can clean the ocean floor.
When an animal can regrow a body part.
When an animal recycles plastic bottles and cans.
Echinodermata means...
stomach foot
spiny skin
segmented body
jointed foot
This structure is responsible for moving water in and out of the water vascular system.
ampullae
madreporite
ring canal
radial canals
This water vascular system structure is centrally located, and acts like the "Grand Central Station" for water being distributed to the arms of an echinoderm.
radial canals
ring canal
madreporite
stone canal
A sea star can eat a bivalve by...
prying open the shell and pulling it out using its tube feet.
swallowing the entire shell with the bivalve inside.
digesting the bivalve by pushing its stomach into its shell.
using its arms to smash the shell on a rock before eating the bivalve inside.
Some sea urchins...
are large enough to eat cruise ships.
can't move.
are flat.
have venomous spines.
Sea urchins use their mouth structure to feed on...
whales.
algae.
the kraken.
sand dollars.
Sand dollars use their mouth structure to feed on...
algae.
bivalves.
detritus.
air pods.
Which of the following lists the correct order in which water travels through the water vascular system?
tube feet, stone canal, madreporite, radial canal, ring canal, ampullae
stone canal, radial canal, ring canal, ampullae, tube feet, madreporite
ring canal, radial canal, ampullae, tube feet, stone canal madreporite
madreporite, stone canal, ring canal, radial canal, ampullae, tube feet
One of the numerous external, fluid-filled muscular tubes of an echinoderm, such as a starfish or sea urchin, serving as organs of locomotion, food handling, and respiration.
TUBE FEET
REGENERATION
FISSION
ECHINOIDEA
Sea stars belong to what Phylum?
Invertebrata
Arthropoda
Nematoda
Echinodermata
Besides sea stars, what are two other members of the echinoderm phylum.
sea cucumbers and sand pennies
sand dollars and sea urchins
sea urchins and sea pickles
Sea stars move by using:
Arms
Tube feet
Ocean currents
Which members of the echinoderm phylum look like pin cushions?
Sea lily
Sea urchin
Sea star
What special ability do sea cucumbers have?
They can re-grow internal organs.
They can use camouflage to hide from predators.
They can out-swim predators.
Echinoderms use their water vascular systems to... (select all that apply)
breathe, transport oxygen
eat, transport nutrients
move using hydraulic tube feet
as a nervous system, to sense the environment
Echinoderms are exclusively _____ animals.
marine
terrestrial
freshwater
all of the above
tube feet
stone canal
digestive glands/pyloric caecum
madreporite
Located at the end of rays, these are used for sensing light variants (shadows)
Spinnacles
Eyespots
Podia
Ampulla
Another name for the arms of a starfish
Rays
Spinicles
Limbs
Extensions
Digestive glands (pyloric caeca) used for absorbing nutrients are located
In the stomach
In the ampulla
In the arms
In the stone canal
