A parasitic protist that presents a major health problem to backpackers and hikers if they drink unfiltered stream or lake water is
A) Giardia.
B) Plasmodium.
C) Pfiesteria.
D) Didinium.
E) Trypanosoma.

Question

Quizplus · Accepted Answer

Giardia is a parasitic protist that can contaminate water sources such as streams and lakes, causing giardiasis when ingested by humans. This is a common concern for backpackers and hikers who might drink unfiltered water.

A Parasitic Protist That Presents a Major Health Problem to Backpackers