Geosmins are
A) a strain of Bacillus.
B) nitrogen-fixing bacteria.
C) metabolites that give soil its odor.
D) produced by Rhizobium.
E) metabolites that give soil its odor AND produced by Rhizobium. F) metabolites that give soil its odor AND produced by Bacillus.

Question

Quizplus · Accepted Answer

Geosmins are secondary metabolites produced by certain bacteria and fungi, and they are responsible for the earthy and musty odor of soil. They do not refer to a specific bacterial strain or group of bacteria such as Bacillus, nitrogen-fixing bacteria, or Rhizobium.

Geosmins Are