soil test practice questions with multiple choices and correct verified answers.

which of the following types of soil has the smallest pore space between individual particles? a. silt b. clay c. loam d. sand - correct answer b. clay the porosity of soil is a measure of a. its cation exchange capacity b. how deep its topsoil layer is c. how much biological material it contains d. how quickly it drains e. none of these answes are correct - correct answer e. none of these answers are correct all of the following will increase the ability of soil to hold water except a. organic ferilizers b. humus c. loam d. clay e. inorganic fertilizers - correct answer e. inorganic fertilizers a cross sectional view of the____________in a soil properly termed a soil____________ a. horzons.........profile b. surface litter.........horizons c. surface litter...........profile d. profile...........sample e. horizons.............sample - correct answer a. horizons..........profile what is the correct order of the horizons? - correct answer O, A, B, C good soils have all the following except a. need excessive amounts of inorganic fertilizers infiltration and good water holding capacity c. low salt content d. pH around 7 e. has good aeration - correct answer a. need excessive amounts of inorganic fertilizers what is a natural way for farmers ti add nitrogen into the soils? a. spread inorganic fertilizers b. plant leguminous crops c. all of the above d. skip a year of planting e. add lime to the entire field - correct answer b. plant leguminous crops which of the following soil characteristics would not influence plant growth? a. water-holding capacity b. porosity c. nutrient holding capacity d. soil texture e. soil color - correct answer e. soil color soil texture that is considered good for nutrient-holding capacity, low for permeability and poor aeration is a. silt b. clay c. sand d. loam - correct answer b. clay the surface litter horizon is described by the letter a. O b. B c. C d. F e. A - correct answer a. O tectonic plates move apart in opposite direction at a a. transform fault boundary b. convergent plate boundary c. divergent plate boundary d. subduction zone - correct answer c. divergent plate boundary as the water seeps down, it dissolves various soil components in upper layers and carries to lower layers in a process called a. soil permeability b. leaching c. soil horizions d. soil profile - correct answer b. leaching soil is developed most directly through a. earthquakes b. moving techtonic plates d. volcanic processes e. soil erosion - correct answer e. soil erosion when conducting a soil texture test with a spray bottle and your hand, one can most directly determine a. color b. porosity c. nutrient content d. pH - correct answer b. porosity which one of these soil test is not a chemical analysis? ity b. pH c. organic content analysis (nitrates) d. soil texture - correct answer d. soil texture the humus layer does all of the following except topsoil hold water b. makes soil vunerable to drought, and disease c. provides nutrients for plants and soil organism d. makes root growth easier and helps improve soil aeration - correct answer b. makes soil vulnerable to drought, and disease soil is a complex mixture of a. air and water b. mineral nutrients c. all of these answers d. none of these answers e. eroded rock - correct answer c. all of these answers what is a benefit of using organic fertilizers? a. they are able to maximize water-holding capacities b. nutrients are quickly leached away c. nutrients such as nitrogen and phosphorous are absent d. they raise soil pH, which is good for crops e. the exact chemical content is known - correct answ