Life Science Review 15.4: Question Preview (ID: 19554)


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The name echinoderms means
a) spiny skinned b) endoskeleton c) simple nervous system d) water vascular system
Spines are located on an echinoderm's
a) endoskeleton b) exoskeleton c) external skeleton d) 2 of the choices
Endoskeletons made of bone are
a) hard and bony b) flexible and stiff c) flexible and bony d) 2 of the choices
What kind of body symmetry do adult echinoderms have?
a) radial symmetry b) asymmetry c) bilateral symmetry d) body symmetry
What kind of body symmetry do echinoderm larva have?
a) radial symmetry b) bilateral symmetry c) asymmetry d) body symmetry
What controls the movement of sea stars?
a) radial nerve b) water vascular system c) endoskeleton d) tube feet
Brittle stars and Basket stars differ from sea stars in that they
a) have longer, slimmer arms b) are smaller c) don't have suckers on their tube feet d) all of the choices
Which echinoderms form a solid, shell-like structure?
a) sea urchins and sand dollars b) sea lilies and feather stars c) brittle stars and basket stars d) sea cucumbers
Which echinoderms are likely to have many arms?
a) sea urchins and sand dollars b) sea lilies and feather stars c) brittle stars and basket stars d) sea cucumbers
Which echinoderms have no arms and soft bodies?
a) sea urchins and sand dollars b) sea lilies and feather stars c) brittle stars and basket stars d) sea cucumbers
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