Which one of the following microorganisms was once called blue-green algae?
A) mycoplasmas
B) cyanobacteria
C) chlamydiae
D) rickettsia

Question

Quizplus · Accepted Answer

Cyanobacteria were once called blue-green algae, although they are not true algae. They are photosynthetic bacteria that release oxygen as a byproduct of photosynthesis. Mycoplasmas, chlamydiae, and rickettsia are all different types of bacteria, but none of them were ever called blue-green algae.

Which One of the Following Microorganisms Was Once Called Blue-Green