Sea Stars
Crabs & Lobsters
Sea Urchins & Sand Dollars
Spiders & Insects
Miscellaneous
100
Kind of skeleton
What is an endoskeleton
100
Number of legs
What is ten
100
Sea urchins have these for defense
What are spines
100
class in which spiders are classified
What is arachnida
100
type of symmetry found in most echinoderms
What is radial
200
structure for taking in water
What is the madreporite
200
these are on stalks
What are the eyes
200
where the mouth is located
What is the ventral surface
200
the most advanced insect
What is a bee
200
largest of all arthropod groups
What is insecta
300
humans model hydraulics after this system
What is the water vascular system
300
mouthparts that manipulate food
What are maxillipeds
300
sand dollars feed on these
What are algae
300
this spider does not spin a web
What is a tarantula
300
oldest group of echinoderms
What is crinoids
400
these canals bring water to each ray
What are radial canals
400
the large main claw
What is the chela
400
a sand dollar's skeleton is composed of this chemical
What is calcium carbonate
400
the most dangerous insect
What is the mosquito
400
the most primitive of the social insects
What are termites
500
tiny protective structures removing parasites
What iare pedicellaria
500
the broad external shell
What is the carapace
500
the sea urchin's feeding mechanism
What is Aristotle's lantern
500
a very poisonous spider found in Sydney, Australia
What is the funnelnose spider
500
glands that produce webs
What are spinnerets
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