How do lymphatic capillaries differ from blood capillaries?
A) They contain red blood cells.
B) They have a wall only one cell layer thick.
C) They are made by lymphocytes.
D) They contain plasma.
E) They have "dead ends."
E
Biology & Microbiology
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In Figure 23-2, the X points to a
a) guard cell. b) mesophyll cell. c) vein. d) stoma.
Biology & Microbiology
Which of these groups is characterized by a lack of symmetry (neither radial nor bilateral)?
A) Cnidarians B) Chordates C) Arthropods D) Flatworms E) Sponges
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Which of the following is a large ciliate?
A. Naegleria fowleri B. Toxoplasma gondii C. Balantidium coli D. Giardia lamblia E. Entamoeba histolytica
Biology & Microbiology
Are you likely to find abundant fossils of soft-bodied animals, like jellyfish?
A. Yes B. No
Biology & Microbiology