Multiple Choice
Which feature does not characterize a protonephridium?
A) It consists of a flame cell and a tubule.
B) Cells of its tubule modify the composition of the filtrate.
C) It produces urine that is less concentrated than extracellular fluid.
D) The filtrate it produces flows toward the excretory pore.
E) It relies on blood pressure to drive filtration.
Correct Answer:
Verified
Correct Answer:
Verified
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