Biological and Chemical Properties of Soil

Questions and Answers

Match the following terms with their definitions:

Cation exchange capacity = One ion replacing another ion pH = Measure of hydrogen ions in a solution Biomass = Total amount of living material in a habitat Humification = Process of changing soil organic matter into humus

Match the following terms with their descriptions:

Clay and humus = Soil particles with the greatest level of cation exchange Nutrient recycling = Caused by Nitrogen Fixation turning nitrogen gas into nitrates Macro-organisms = Convert soil organic matter into humus Nitrogen Fixation = Conversion of nitrogen gas into nitrates by live bacteria

Match the following pH ranges with their corresponding acidity levels:

0-6 = Acidic 7 = Neutral 8-14 = Alkaline or base

Match the organisms with their role in the Carbon Cycle:

Plants = Remove carbon for photosynthesis and return it through respiration Livestock = Get carbon by eating plants and release it through respiration Fungi = Change soil organic matter into humus Nitrogen fixing bacteria = Convert nitrogen gas into nitrates in clover roots Signup and view all the answers

Match the following chemical properties with their descriptions:

Cation exchange capacity = One ion replacing another ion in the soil pH = Measure of hydrogen ions in a solution Soil joins (clay and humus) = Soil particles with high cation exchange level Humification = Process of changing soil organic matter into humus Signup and view all the answers

Match the following pH ranges with their corresponding acidity levels:

0-6 = Acidic 7 = Neutral 8-14 = Alkaline or base 4-9 = Neutral Signup and view all the answers

Match the following biological properties with their definitions:

Soil Biomass = Total living material in a habitat Macro-organisms = Organisms like earthworms or bacteria that convert organic matter to humus Nitrogen Fixation = Conversion of nitrogen gas into nitrates by bacteria Nutrient recycling = Process involving nitrogen fixing bacteria and plants like clover Signup and view all the answers

Match the following organisms with their role in the Carbon Cycle:

Plants = Remove carbon for photosynthesis and release it through respiration Livestock = Obtain carbon by eating plants and release it through respiration Fungi = Convert soil organic matter into humus Nitrogen fixing bacteria = Convert nitrogen gas into nitrates Signup and view all the answers

Match the following terms with their definitions:

Humus = End product of soil organic matter conversion Biomass = Total amount of living material in a habitat Humification = Process of changing soil organic matter into humus Nutrient recycling = Involves nitrogen fixation and plant uptake Signup and view all the answers

Match the organisms with their role in nutrient recycling:

Earthworms = Convert organic matter into humus Plants like clover = Host nitrogen fixing bacteria in root nodules Nitrogen fixing bacteria = Convert nitrogen gas into nitrates Fungi = Change soil organic matter into humus Signup and view all the answers

Match the following terms with their descriptions:

Cation exchange capacity = Level of cation replacement in soil pH range 7 = Neutral acidity level Macro-organisms = Large organisms converting organic matter to humus Nitrogen Fixation = Conversion of nitrogen gas to nitrates by bacteria Signup and view all the answers

Match the organisms with their role in humification:

Fungi = Change soil organic matter into humus Earthworms = Convert organic matter to humus Nitrogen fixing bacteria = Convert nitrogen gas into nitrates Plants like clover = Host nitrogen fixing bacteria in root nodules Signup and view all the answers

Match the following terms with their role:

Cation exchange capacity = Level of cation replacement in soil pH = Affects crop growth and activity of organisms Soil Biomass = Total living material in a habitat Nitrogen Fixation = Conversion of nitrogen gas to nitrates by bacteria Signup and view all the answers