Multiple choice general knowledge

Plankton can be dangerous to humans.

  1. True

  2. False

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

While some plankton species can produce harmful biotoxins that cause shellfish poisoning in humans (such as during 'red tides'), plankton itself is not directly dangerous to humans. The toxins accumulate in shellfish, and eating contaminated shellfish can be harmful, but the plankton don't directly harm humans.