Which type of worm lacks a complete digestive tract?
A) Flatworms
B) Annelids
C) Roundworms
D) All of the above
Correct Answer:
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Q28: Which of the following characteristics are shared
Q29: The echinoderms are most closely related to
Q30: Most chordates are _.
A)invertebrates
B)vertebrates
C)mammals
D)None of the above
Q31: The body symmetry of adult echinoderms could
Q32: Which arthropod subgroup includes the spiders?
A)Arachnids
B)Crustaceans
C)Insects
D)None of
Q34: Which arthropod subgroup includes animals with six
Q35: All vertebrates have _.
A)hair and a backbone
B)a
Q36: Echinoderms can be best described as _.
A)eukaryotic
Q37: Worms all appear to be closely related
Q38: Which of the following phyla is the
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