Biology 2 Quiz 28-4 Question Preview (ID: 33931)
Echinoderms.
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An echinoderms water vascular system opens to the outside though the ring canal.
a) true
b) False
c)
d)
When an echinoderm exerts a pulling force on an object, muscles pull the centers of the tube feet upward.
a) true
b) False
c)
d)
An adult starfish has radial symmetry.
a) True
b) False
c)
d)
Some sea urchins defend themselves using long sharp arms.
a) True
b) False
c)
d)
If a sea star is pulled into pieces, each new piece will produce a new sea star.
a) True
b) False
c)
d)
A starfish can turn its stomach inside out and digest food outside of its body.
a) True
b) False
c)
d)
If an echinoderm has slender, flexible arms, can move rapidly, and feeds on detritus, it is a sea urchin.
a) True
b) False
c)
d)
In echinoderms oxygen is carried throughout the body in a closed circulatory system.
a) True
b) False
c)
d)
In the water vascular system of a sea star, the madreporite connects the ring canal to the tube feet
a) True
b) False
c)
d)
A starfish has two stomachs.
a) True
b) False
c)
d)
The skeleton of an echinoderm is an
a) endoskeleton made of chitin
b) exoskeleton made of chitin
c) endoskeleton made of calcium carbonate
d) exoskeleton made of calcium carbonate
Echinoderms are like vertebrates in that they
a) have an anterior and posterior end
b) have cephalization
c) are deuterostomes
d) are bilaterally symmetrical as larvae and adults
Sea lilies and feather stars
a) make up the oldest class of echinoderms
b) feed by scraping algae from rocks
c) are the only echinoderms that live in fresh water
d) are disk shaped echinoderms that often burrow into the sand
The echinoderms that look like warty, moving pickles are
a) sea urchins
b) feather stars
c) sea stars
d) sea cucumbers
In most species of echinoderms, respiration occurs mainly in the
a) ring canal
b) tube feet
c) radial canals
d) madreporite
Which structure is part of an echinoderms water vascular system?
a) anus
b) stomach
c) madreporite
d) skin gill
Two echinoderms that are in the same class are
a) sea cucumbers and seas urchins
b) sea stars and sea cucumbers
c) brittle stars and sea stars
d) sea urchins and sand dollars
The plates of the endoskeleton are reduced and combined inside a soft , muscular body wall in
a) brittle stars
b) sand dollars
c) sea urchins
d) sea cucumbers
Which of the following statements about the water vascular system of echinoderms is correct?
a) The madreporite forms a circle around the animals mouth
b) he ring canal connects to the madreporite
c) the tube feet are attached to the ring canal
d) each radial canal opens to the outside
The water vascular system of echinoderms is involved with each of the following functions EXCEPT
a) reproduction
b) circulation
c) movement
d) respiration
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