The Firmicutes ________ are the Only Known Phototrophs That Produce

Question

The firmicutes ________ are the only known phototrophs that produce endospores.
A) actinomycetales
B) bacillales
C) clostridiales
D) heliobacteriaceae
E) cyanobacteria

Accepted Answer

Heliobacteriaceae are the only known phototrophs among the options given that produce endospores. They are a family of gram-positive firmicutes that perform photosynthesis and are capable of forming endospores, distinguishing them from other phototrophic bacteria such as cyanobacteria.