The ____ is an extension of the upper body wall in mollusks.
A) radula
B) mantle
C) gill
D) lung
E) siphon
Correct Answer:
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Q15: Animals most likely evolved most recently from
Q16: Nephridia are _.
A) circulatory organs
B) respiratory
Q17: The oldest widely accepted evidence of animals
Q18: Poriferans are _.
A) herbivores
B) suspension feeders
C)
Q19: All animals are _.
A) multicellular, heterotrophic,
Q21: You find a wormlike arthropod with a
Q22: By the end of which period,characterized by
Q23: Four of the following are echinoderms.Which one
Q24: What kind of system do annelids have
Q25: While looking in a tide pool,you find
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