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12 questions
What does the term echinoderm mean?
tube feet
stomach foot
spiny skin
What type of symmetry do adult echinoderms exhibit?
Asymmetry
Pentaradial symmetry
Bilateral symmetry
Echinoderms have an internal skeleton and a system of fluid-filled tubes called a(n)...
water vascular system
nervous system
notochord
What type of skeleton do echinoderms have?
Exoskeleton
Hydrostatic skeleton
Endoskeleton
Echinoderms have no head or brain.
True
False
The process by which some organisms replace or restore lost or amputated body parts.
tube feet
fission
regeneration
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
A class of echinoderms that comprises the sea cucumbers.
holothuroidia
asteroidia
echinoidia
The class that belongs to the phylum Echinodermata. Ex. the sand dollars, and sea urchins.
holothuroidia
asteroidia
echinoidia
One of the largest and most familiar classes within the Phylum Echinodermata. The animals, commonly known as sea stars or starfishes.
holothuroidia
asteroidia
echinoidia
What is the primary component of an echinoderm's skeleton?
Spicules of chitin plates
Ossicles of chitin plates
Ossicles of calcium carbonate
Sea urchins have got spines ...
To harm people that are walking around
For hunting prey
To protect themselves and to move their bodies
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