Themes > Science > Botanical Sciences > Major Divisions Of Life > Kingdom Monera > Division Eubacteriophyta (True Bacteria or Eubacteria)
Prokaryotic, unicellular organisms; three major types or forms, including spherical coccus, rod-shaped bacillus and spiral-shaped spirillum forms; many pathogenic as well as beneficial species; studied in bacteriology and microbiology courses; grow practically everywhere, including your mouth and digestive tract, the root nodules of legumes and the sun-baked boulders of arid deserts; the latter bacteria are responsible for microscopic layers of iron and manganese oxide on boulders known as desert varnish.
Yellow sweet clover (Melilotus indicus), a member of the pea family (Fabaceae). The roots of this legume contain swollen nodules (red arrow) containing nitrogen-fixing bacteria of the genus Rhizobium or Bradyrhizobium in the bacteria family Rhizobiaceae.
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