Which of These is True Regarding Soil Humus

Question

Which of these is true regarding soil humus?
A)It is quickly broken down by microorganisms.
B)It is a minor component of organic carbon in the soil.
C)It is degraded very slowly over time.
D)It is primarily inorganic in composition.
E)It is a polymer of glucose.

Accepted Answer

Soil humus is degraded very slowly over time and can remain in the soil for many years.

Answer: E
 Soil humus is a complex organic substance composed of a variety of plant and animal materials, including cellulose, lignin, proteins, and carbohydrates. The carbohydrates include glucose, which is a monosaccharide or simple sugar, but humus itself is a complex polymer made up of many different types of organic molecules.