Multiple choice

The diatoms are one of the largest and ecologically most significant groups of organisms on Earth. Which diatom is responsible for producing about a quarter of all the oxygen within Earth's biosphere?

  1. Bacteriastrum

  2. Ditylum brightwelli

  3. Odontella aurita

  4. Phaeodactylum tricornutum

  5. Navicula
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Navicula is a genus of boat-shaped diatom.Navicula play an important role in global ecology, producing about a quarter of all the oxygen within Earth's biosphere and serving as keystone species in the food chain of many environments where they provide a staple for the diets of many aquatic species.

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