Echinoderms can be best described as ________.
A) eukaryotic heterotrophs with tissue, bilateral symmetry as larva, and a water vascular system
B) eukaryotic autotrophs that lack tissue, but have bilateral symmetry as larva, and a water vascular system
C) eukaryotic heterotrophs with tissue, bilateral symmetry as larva, and a blood vascular system
D) eukaryotic autotrophs with tissue, bilateral symmetry as larva, and a water vascular system
Correct Answer:
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Q31: The body symmetry of adult echinoderms could
Q32: Which arthropod subgroup includes the spiders?
A)Arachnids
B)Crustaceans
C)Insects
D)None of
Q33: Which type of worm lacks a complete
Q34: Which arthropod subgroup includes animals with six
Q35: All vertebrates have _.
A)hair and a backbone
B)a
Q37: Worms all appear to be closely related
Q38: Which of the following phyla is the
Q39: Which worm phylum lacks body segmentation?
A)Flatworms
B)Annelids
C)Roundworms
D)Both flatworms
Q40: What are the key characteristics of arthropods?
A)Fused
Q41: Which group of fishes evolved first (in
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