When a red tide occurs, huge numbers of microscopic organisms are filtered out of coastal waters by oysters and clams. This sometimes causes the shellfish to become toxic to people who eat them. The organisms that create the red tide are classified as
A) dinoflagellates.
B) diatoms.
C) euglenids.
D) red algae.
E) slime molds.

Question

Quizplus · Accepted Answer

Dinoflagellates are the type of microscopic organisms responsible for red tides. They produce toxins that can accumulate in shellfish, making them dangerous for human consumption.

When a Red Tide Occurs, Huge Numbers of Microscopic Organisms