Freshwater flatworms have this type of system for osmoregulation.

A. isonephridial
B. eunephridial
C. protonephridial
D. osmonephridial
E. metanephridial


Answer: C

Biology & Microbiology

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Which statement is true?

a. Blood flows from areas of high hydrostatic pressure in the arterioles to low hydrostatic pressure in the arteries. b. Blood flows from areas of low hydrostatic pressure in the arterioles to high hydrostatic pressure in the arteries. c. Blood flows from areas of high hydrostatic pressure in the arteries to low hydrostatic pressure in the arterioles. d. Blood flows from areas of low hydrostatic pressure in the arteries to high hydrostatic pressure in the arterioles.

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It is thought by scientists that the earliest living organisms

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Comparing the body structures of organisms to find evidence of a shared evolutionary history is called ________

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Biology & Microbiology