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Pre-Test
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1
The cells that act to guard and protect the body are
A)connective cells.
B)nervous cells.
C)endocrine cells.
D)epithelial cells.
2
Cells of connective tissue are derived from the
A)ectoderm.
B)mesoderm.
C)endoderm.
D)All of the above
3
Microfilaments bundle together to form myofibrils in
A)cardiac muscle.
B)skeletal muscle.
C)smooth muscle.
D)1 and 2 only
4
The ribs and vertebral column are part of the axial skeleton.
A)True
B)False
5
A profound difference between the sponges and the other animals is that
A)sponges completely lack tissues.
B)sponges have radial symmetry while other animals have bilateral symmetry.
C)cephalization is seen in sponges but not in other animals.
D)organ systems in sponges work differently than in other animals.
E)Both 2 and 4







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