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Echinoderms

Total questions: 32

Worksheet time: 20mins

Name
Class
Date
1.
What is it called when sea cucumbers "spill their insides"?
a)
regeneration
b)
ecdysis
c)
evisceration
d)
amputation
2.

The phylum Echinodermata includes all of the following except:

a)

urchins

b)

anemones

c)

sand dollars

d)

feather stars

3.
The class Crinoidea includes
a)
sand dollars
b)
basket stars
c)
starfish
d)
sea lilies
4.

Class Asteroidea includes the

a)

sea stars

b)

basket stars

c)

brittlestars

d)

none of the above

5.
What allows water to enter the water vascular system?
a)
tube feet
b)
mouth
c)
ampulla
d)
madreporite
6.

What carries water to the tube feet?

a)

radial canal

b)

stone canal

c)

ampulla

d)

none of the above

7.
Which stomach connects to the digestive glands in each arm?
a)
cardiac
b)
pyloric
c)
both of the above
d)
neither of the above
8.
The endoskeleton is composed of calcium carbonate plates called
a)
tube feet
b)
ossicles
c)
ampulla
d)
pedicellariae
9.

The intake of the water vascular system is called the

a)

madreporite

b)

ring canal

c)

tube foot

d)
ampulla
10.
Which is an example of a Holothuroidea member? 
a)
sea star
b)
sea cucumber
c)
sand dollar
d)
sea urchin 
11.
Which is an example of an Echinoidea member? 
a)
sea star
b)
sand dollar
c)
sea cucumber
d)
sea lilies 
12.
What echinoderm is this?
a)
sea lily 
b)
sea urchin 
c)
sea cucumber 
d)
sand dollar 
13.

Echinoderms have a system of fluid-filled tubes called the

a)

water vascular system

b)

nervous system

c)

notochord

d)

ampulla

14.
Sea stars feed by
a)
Injecting poison that digests the prey 
b)
Everting their stomach to digest prey
c)
Chewing their prey with jaws and teeth
d)
squeezing their prey until it dies
15.
What type of symmetry do adult echinoderms exhibit?
a)
Asymmetry
b)
Pentaradial symmetry
c)
Bilateral symmetry
d)
Trilateral symmetry
16.
What does the term echinoderm mean?
a)
tube feet
b)
star shaped
c)
spiny skin
d)
stomach foot
17.
Where does fertilization occur with sea stars?
a)
internal
b)
external
18.
Which is an example of an Ophiuroidea member?
a)
b)
c)
d)
19.
What echinoderm is this?
a)
sea urchin 
b)
sea lily 
c)
brittle star
d)
sand dollar 
20.
What do starfish use to sense light?
a)
eyes
b)
tubefeet
c)
eye spots
d)
ampulla
21.
Sea stars often feed on...
a)
cniderians
b)
sponges
c)
cephalopods
d)
Bivalve mollusks
22.
By what process will starfish regrow an arm torn off by a predator?
a)
Reconstructive meiosis
b)
Regeneration
c)
Tissue regenesis
d)
Mitotic restoration
23.
Why are efforts to control sea star population growth, like the Crown of Thorns sea star, challenging? 
a)
sea star larvae are planktonic
b)
sea stars can reanimate after death
c)
sea stars can kill humans
d)
sea stars eat all the coral
24.

Why is the Crown of Thorns sea star considered a pest?

a)

sea star larvae are planktonic

b)

they eat coral polyps

c)

they are poisonous to humans

d)

they eat all the kelp

25.

Where are you most likely to find an echinoderm?

a)

free swimming in a lake

b)

benthic marine habitat

c)

free swimming in marine habitat

d)

marine or terrestrial habitats

26.

What is wrong with this sea star?

a)

regrowing legs after trauma

b)

damaged from hitting rocks in intertidal zone

c)

affected by sea star wasting disease

d)

injured by a predatory mammal or bird

27.

The endoskeleton of echinoderms is composed of calcium carbonate plates called

a)

nacre

b)

ossicles

c)

ampulla

d)

pedicellariae

28.

Why is the purple sea urchin considered a pest in Pacific Ocean?

a)

poison sea otters

b)

eat all the giant kelp

c)

larvae poison the fish

d)

eat all the corals

e)

toxic to humans

29.

Which of these is a member of Class Echinoidea? (hint: choose 2)

a)
b)
c)
d)
e)
30.

Which of these has a mouthpart called an Aristotle's Lantern?

a)

Sea star

b)

sea cucumber

c)

sea urchin

d)

feather star

31.

Which of these is NOT a member of Class Asteroidea?

a)
b)
c)
d)
32.

Which of these are members of class Holothuroidea? (choose 2)

a)
b)
c)
d)

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