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Pre-Test
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1
Which of these is NOT a feature common to all animals?
A)motility
B)multicelluarity
C)heterotrophic lifestyle
D)lack of a cell wall
E)specialized tissues
2
A(n) _____ is an example of a specialized organ system that assists with distribution of nutrients and removal of wastes.
A)Flagella
B)Excretory system
C)Coelom
D)pseudocoelom
E)circulatory system
3
Segmentation allowed for redundant systems and improved
A)Hydration
B)Meiosis
C)Locomotion
D)Reproductive success
E)Vision
4
Which of these is NOT a protostomes?
A)Spiralians
B)Ecdysozoans
C)Lophotrochozoa
D)Echinodermata
E)Platyzoa
5
Molecular analysis suggests that the rapid diversification during the Cambrian explosion may have been due to evolution of the
A)Hox genes.
B)Segmentation.
C)True coeloms.
D)Closed circulatory systems.
E)Disease resistance.





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