Segmentation
A) is common in Arthropods.
B) requires an exoskeleton.
C) is common in sponges.
D) occurs in flatworms.
Correct Answer:
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Q6: Animals that are constructed around a central
Q7: Animals that can only be divided into
Q8: Diploblastic organisms differ from triploblastic organisms in
Q9: The earliest animal fossils
A) are about 2.5
Q10: Organs in the coelom of an animal
Q12: These are parasitic flatworms.
A) roundworms
B) turbellarians
C) flukes
D)
Q13: Sessile organisms overcome problems relating to sexual
Q14: In most sessile organisms, the fertilized egg
Q15: Animals that swim about freely are
A) plankton.
B)
Q16: Animals with a backbone are
A) vertebrates.
B) chordates.
C)
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