Animals with a backbone are
A) vertebrates.
B) chordates.
C) colonial.
D) invertebrates.
Correct Answer:
Verified
Q11: Segmentation
A) is common in Arthropods.
B) requires an
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)
Q17: A type of multicellular animal that consists
Q18: Fragmentation is a method of reproduction in
Q19: A specific type of reproduction in which
Q20: The free-swimming adult stage of many cnidarians
Q21: The sessile stage of many cnidarians is
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