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:

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"P" is the elemental symbol for

A. nickel. B. potassium. C. plutonium. D. phosphorus. E. copper.

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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

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Which protists have both plant and animal features?

a. Paramecium b. Trychonympha c. Trichomonas d. Euglena

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