CSES 2040 Test 3 (auburn - huluka)
UPDATED ACTUAL Questions and
CORRECT Answers
Insoluble Organic - CORRECT ANSWER - Humin; highly condensed, complexed with
clays
Precipitated Soluble Organic - CORRECT ANSWER - Humic acids; dark brown to black,
high molecular weight
Soluble Organic - CORRECT ANSWER - Fulvic acids; yellow to red, lower molecular
weight
Soils contain how much more Carbon than vegetation? - CORRECT ANSWER - three
times
Soils contain ________ as much Carbon as vegetation and the atmosphere combined. -
CORRECT ANSWER - twice
Soil Organic Matter - CORRECT ANSWER - contributes to CEC, increases water holding
capacity, pore space, infiltration, stabilization of soil aggregates, decreases soil density, erosion
What is the storehouse for N, P, and S in soil? - CORRECT ANSWER - organic matter
How much Carbon is added to the atmosphere per year? - CORRECT ANSWER - 4.5
picograms
Carbon Sequestration - CORRECT ANSWER - a process by which carbon dioxide is
removed from the atmosphere and held in solid or liquid form
, Products of aerobic decomposition - CORRECT ANSWER - CO2, H2O, energy,
Nitrogen, Phosphorus, Sulfur
C/N ratio - CORRECT ANSWER - the ratio of the weight of organic carbon to the weight
of total nitrogen
One hectare = - CORRECT ANSWER - 2 million kg
Mineralization - CORRECT ANSWER - decomposition of the chemical compounds in
organic matter
Immobilization - CORRECT ANSWER - the conversion of inorganic compounds to
organic compounds (C/N ratio > 25:1)
Denitrification - CORRECT ANSWER - the biological reduction of nitrate or nitrite to
gaseous N
Nitrification - CORRECT ANSWER - oxidation of NH4+ to nitrate by bacteria or other
organisms
Ammonification - CORRECT ANSWER - the biochemical processes whereby ammonia-
N is released from nitrogen containing organic compounds
Fertilizer - CORRECT ANSWER - any organic or inorganic man-made or natural material
that contains at least one or more of the essential nutrients in any form
Organic fertilizers - CORRECT ANSWER - plant material, manure
The overall population (number) of microorganisms under normal aerobic conditions changes
with time, generally following changes in: - CORRECT ANSWER - soluble food
UPDATED ACTUAL Questions and
CORRECT Answers
Insoluble Organic - CORRECT ANSWER - Humin; highly condensed, complexed with
clays
Precipitated Soluble Organic - CORRECT ANSWER - Humic acids; dark brown to black,
high molecular weight
Soluble Organic - CORRECT ANSWER - Fulvic acids; yellow to red, lower molecular
weight
Soils contain how much more Carbon than vegetation? - CORRECT ANSWER - three
times
Soils contain ________ as much Carbon as vegetation and the atmosphere combined. -
CORRECT ANSWER - twice
Soil Organic Matter - CORRECT ANSWER - contributes to CEC, increases water holding
capacity, pore space, infiltration, stabilization of soil aggregates, decreases soil density, erosion
What is the storehouse for N, P, and S in soil? - CORRECT ANSWER - organic matter
How much Carbon is added to the atmosphere per year? - CORRECT ANSWER - 4.5
picograms
Carbon Sequestration - CORRECT ANSWER - a process by which carbon dioxide is
removed from the atmosphere and held in solid or liquid form
, Products of aerobic decomposition - CORRECT ANSWER - CO2, H2O, energy,
Nitrogen, Phosphorus, Sulfur
C/N ratio - CORRECT ANSWER - the ratio of the weight of organic carbon to the weight
of total nitrogen
One hectare = - CORRECT ANSWER - 2 million kg
Mineralization - CORRECT ANSWER - decomposition of the chemical compounds in
organic matter
Immobilization - CORRECT ANSWER - the conversion of inorganic compounds to
organic compounds (C/N ratio > 25:1)
Denitrification - CORRECT ANSWER - the biological reduction of nitrate or nitrite to
gaseous N
Nitrification - CORRECT ANSWER - oxidation of NH4+ to nitrate by bacteria or other
organisms
Ammonification - CORRECT ANSWER - the biochemical processes whereby ammonia-
N is released from nitrogen containing organic compounds
Fertilizer - CORRECT ANSWER - any organic or inorganic man-made or natural material
that contains at least one or more of the essential nutrients in any form
Organic fertilizers - CORRECT ANSWER - plant material, manure
The overall population (number) of microorganisms under normal aerobic conditions changes
with time, generally following changes in: - CORRECT ANSWER - soluble food
