The tube feet of echinoderms that are used for locomotion, capturing prey, and gas exchange are "inflated" by the ________, which is unique to the echinoderms
A) coelom
B) tubular gut
C) hemocoel
D) water-vascular system
E) hydrostatic skeleton
D
Biology & Microbiology
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The most common vector-borne disease in North America and Europe transmitted by the bite of Ixodes ticks is caused by:
a. Leptospira interrogans. b. Borrelia burgdorferi. c. Treponema carateum. d. Rickettsia rickettsii.
Biology & Microbiology
"P" is the elemental symbol for
A. nickel. B. potassium. C. plutonium. D. phosphorus. E. copper.
Biology & Microbiology
UV light _____ vitamin D.
A. decreases the body's production of B. increases the body's production of C. destroys existing D. has no effect on E. alters the structure of
Biology & Microbiology
Which protists have both plant and animal features?
a. Paramecium b. Trychonympha c. Trichomonas d. Euglena
Biology & Microbiology