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Home Q & A Board Biology-Related Homework Help General Biology
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krystian krystian
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6 years ago
The water vascular system in echinoderms is used for locomotion, water enters the water vascular
  system of a sea star through a structure called the
 
  a. ampulla.
  b. ossicle.
  c. radial canal.
  d. ring canal.
  e. madreporite.

Question 2

The internal skeleton of echinoderms is made of calcium-stiffened ____ that develop from mesoderm.
 
  a. ampullae
  b. ossicles
  c. radial canals
  d. ring canals
  e. madreporites
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RobinRKPRobinRKP
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6 years ago
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krystian Author
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#2
6 years ago
Easily the best answer Grinning Face with Smiling Eyes
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#3
6 years ago
If so, mark it solved Smiling Face with Glasses
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