Echinoderms get their characteristic spiny skin from the layering of which structure?
- an arm
- a tube foot
- a sieve plate
- an ossicle
This structure is a skeletal unit.
This structure is a skeletal unit.
This structure is a skeletal unit.
This structure is a skeletal unit.
The water vascular system is responsible for which function?
- circulating
- reproducing
- digesting
- moving
The water vascular system controls the tube feet.
The water vascular system controls the tube feet.
The water vascular system controls the tube feet.
The water vascular system controls the tube feet.
What advantage does mutable collagenous tissue give Echinoderms?
- provides energy
- saves energy
- spends energy
- converts energy
Echinoderms use mutable collagenous tissue to lock into a position.
Echinoderms use mutable collagenous tissue to lock into a position.
Echinoderms use mutable collagenous tissue to lock into a position.
Echinoderms use mutable collagenous tissue to lock into a position.
Although Echinoderms are invertebrates, which structure do they use for protection?
- a radial canal
- a hard plate
- an endoskeleton
- an exoskeleton
This structure is made up mostly of calcium.
This structure is made up mostly of calcium.
This structure is made up mostly of calcium.
This structure is made up mostly of calcium.
How are dead Echinoderms naturally recycled?
- They are the main ingredient in live stock feed.
- They are the main ingredient in limestone.
- They are the main ingredient in toothpaste.
- They are the main ingredient in collagen.
"Naturally" means that no human action is necessary to recycle dead echinoderms.
"Naturally" means that no human action is necessary to recycle dead echinoderms.
"Naturally" means that no human action is necessary to recycle dead echinoderms.
"Naturally" means that no human action is necessary to recycle dead echinoderms.
Which kind of symmetry is shown by Echinoderm larvae?
- bilateral
- pentaradial
- radial
- asymmetrical
This kind of symmetry produces mirror images.
This kind of symmetry produces mirror images.
This kind of symmetry produces mirror images.
This kind of symmetry produces mirror images.
Summary
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