Soil Science – Agriculture Board Exam Reviewer (Set 2)

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Question of
Soil is a medium for plant growth because plant depends on soil to supply four needs Such as , except one:
- Anchorage
- Carbon dioxide
- Nutrients and water
- Oxygen
Question of
Soil is made of solid particles , between these solid particles are pore spaces that contain gases and / or water . This arrangement of solid particles and pore spaces is called
- Soil texture
- Soil pitting
- Soil amendment
- Soil classification
- Soil matrix
Question of
Agricultural uses of soil are as follows, except one:
- Recreation
- Grazing land
- Forestry
- Cropland
Question of
Plant leaves collect sunlight to use the sun’s energy in the process known as
- Transpiration
- Respiration
- Photosynthesis
- Metabolism
Question of
The roots absorb water and nutrients from the soil solution . Water reaches roots in two ways either
- a. Water flows toward the root
- b. Through the root hairs
- c. Roots grows into moist soil
- d. A & B
- e. A & C
- e. A & C
Question of
Eighteen nutrients are required by the plant , how much nutrients obtain by plant in the soil
- 9
- 10
- 11
- 12
- 13
Question of
A vertical section through the soil extending well into the unweathered parent material and exposing all the horizons is called
- Soil horizon
- Soil profile
- Soil structure
- Soil sampling
- Soil pitting
Question of
A section of soil extending from the surface to the depth of root penetration of the deepest rooted plants
- Pedon
- Soil profile
- Parent material
- Mottling
- Plow pan
Question of
The thin layer of soil and is defined as the surface mineral horizon with an organic matter accumulation is called
- Horizon C
- Horizon E
- Horizon A
- Horizon K
- Horizon B
Question of
The basic material of the earth’s crust is called
- Igneous rock
- Sedimentary rock
- Metamorphic rock
- Shale e. Marble
Question of
A soils whose parent materials were carried and deposited in moving fresh water to form sediments is called
- Residual soil
- Transported soil
- Soil surface
- Alluvial soil
- Sub-soil
Question of
Five factors govern the soil development process are, except one:
- Parent material
- Weathering
- Climate
- Topography
- Life and time
Question of
Parent material deposited more simply by sliding or rolling down a slope . This material is scattered in hilly or mountainous areas and is called
- Lacustrine
- Colluvium
- Eolian
- Alluvian
- Residual
Question of
An organic layer made of wholly or partially decayed plant and animal debris . This horizon generally occurs in a virgin soil is called
- A horizon
- O horizon
- B horizon
- R horizon
- C horizon
Question of
The ease with which air and water and roots pass more through the soil is called
- Permeability
- Porosity
- Structure
- Percolation
- Density
Question of
A factor govern the soil development process which affects soil formation by changing water movement and soil temperature which result in low area have a deep, rich soil that drain slowly while causes erosion in slopes thin soil is
- Parent material
- Weathering
- Topography
- Time/life
- Climate
Question of
This part of the soil profile is where most plant roots grow and it is consist of A. E and B horizons together is called
- Sodic
- Pedon
- Solum
- Alluvial
- Outwash
Question of
Most mineral soils come from parent materials moved from one area to another by , except one:
- Ice
- Water
- Temperature
- Wind
- Gravity
Question of
A term that refers to the size of the mineral particles in the soil. The size of soil particles, in turn, affects such as soil traits as water holding capacity and aeration is called
- Soil structure
- Hydraulic conductivity
- Infiltration
- Permeability
- Soil texture
Question of
A term refers to the behavior of soil when the pressure is applied . It relates to the degree that soil particles stick to one another and mostly results from certain types of clay is called
- Soil structure
- Soil texture
- Soil porosity
- Soil consistence
- Soil separates
Question of
Plasticity is how easily soil can molded between the fingers while to determine stickiness, some soil is pressed between thumb and forefinger , and the amount that sticks to the fingers is noted. This stickiness and plasticity is describe in what soil?
- Wet soil
- Moist soil
- Acid soil
- Dry soil
- Alluvial soil
Question of
Clumps of soil caused by tillage is called
- Clods
- Peds
- Friable
- Mottling
- Caliche
Question of
The physical condition of the soil for growing plants results from the interaction of consistence , texture, structure and permeability which is called
- Soil tilth
- Soil porosity
- Soil triangle
- Bulk density
- Gleying
Question of
Governs the way water behaves in the soil and influences how easily a soil can be worked is a physical property of the soil called
- Soil consistence
- Soil structure
- Soil texture
- Soil porosity
- Soil aggregates
Question of
Soil consistence measure traits such as
- Stickiness
- Plasticity
- Friability
- Friability
- All of the choices
Question of
Improving tilth is largely a matter of improving structure and avoiding compaction. The following practices can help improve tilth, except one:
- Increase the number of tillage operations
- Add lime where needed
- Never work wet soil , and avoid quite dry ones as well
- Avoid unnecessary traffic over the soil
- Avoid unnecessary traffic over the soil
Question of
Nutrients plants get from air and water are , except one:
- Hydrogen
- Carbon
- Oxygen
- Nitrogen
Question of
A soil color which suggest that the soil is waterlogged for part but not all of the year
- Brown to black
- White to light gray
- Yellow to red
- Bluish- gray
- Mottle color
Question of
The arrangement of soils into classes of several levels
- Soil amendment
- Soil classification
- Soil fertility
- Soil conservation
- Soil pitting
- Soil pitting
Question of
Soil water moves upward in the soil as the surface layer dry moving from areas of high potential to areas of low potential . This upward movement is called
- Capillary flow
- Capillary
- Capillary rise
- Capillary water
- Capillary fringe
Question of
That part of soil water that can be absorbed by plant roots is called
- Hydroscopic water
- Cohesion water
- Gravitational water
- Available water
- None of the choices
Question of
A soil which held loosely and can be absorbed by plants is called sometimes as capillary water is known as
- Adhesion water
- Gravitational water
- Available water
- Cohesion water
- None of the choices
Question of
The lack of oxygen results from water-logging so bluish – gray color indicates poor soil drainage . The occurrence of this color is called
- Mottling
- Chroma
- Hue
- Talus
- Gleying
Question of
The absorption of water by plants roots is also govern by the
- Soil moisture tension
- Field capacity
- Soil –water potential
- Hydraulic conductivity
- Adhesion
Question of
Breaking of plant stems because of stem , weakness , often caused by excess nitrogen and/on potassium is called
- Mulching
- Pudding
- Bleeding
- Chiseling
- Lodging
Question of
Fungi that form a symbiotic relationship with plant roots . The fungi help the plant absorb water and nutrients while they receive food from the plant is called
- Actinomycetes
- Heterotroph
- Mycorrhizae
- Nitrogen Fixing Bacteria
- Mycelium
Question of
Many actinomycete species produce chemicals that stop the growth of other microorganism is a phenomenon called
- Protagonism
- Antagonism
- Symbiotic
- Autotroph
- Fixation
Question of
A process by which certain soil microbes convert organic nitrogen to ammonia is called
- Nitrogen fixation
- Denitrification
- Mineralization
- Ammonification
- Immobilization
Question of
A certain bacteria blue-green algae , and actinomycetes can use it . They are absorb the gas and convert it to ammonia that plants can use . This process is called
- Nitrogen fixation
- Non –symbiotic nitrogen fixation
- Symbiotic nitrogen
- Mineralization
- Denitrification
Question of
Fruiting bodies grow from the mycelium . These bodies release spores that may be considered the seeds of what?
- Nematodes
- Algae
- Fungi
- Bacteria
- Amoeba
Question of
That portion of the soil that includes animal and plant remains at various stages of decay is called
- Organic matter
- Solid phase
- Liquid phase
- Gas phase
- None of the choices
Question of
A type of soil water which is too tightly held by adhesion to be used by plants is called
- Gravitational water
- Capillary water
- Hygroscopic water
- Ground water
- None of the choices
Question of
Rainfall that cannot be absorbed into soil fast enough runs into streams or lakes . This water is called
- Ground water
- Gravitational water
- Surface water
- Run off
- Soil water
Question of
Some crop are planted to be turned into the soil rather than for harvest . This practice is called
- Compost making
- Humus making
- Green manuring
- Cover crop
- None of the choices
Question of
These nutrients are held in the soil because they are attracted to clay and humus
- Soil mineral
- Organic matter
- Adsorbed mineral
- Soil mineral and organic matter
- None of the choices
Question of
Dissolved ions are the most readily available form of nutrients . The mixture of ions soil water is termed
- Soil colloids
- Micelle
- Hydroponic
- Sesquioxides
- Soil solution
Question of
Applies to the loss of nitrogen in ammonium fertilizers and urea as soil reactions convert it to ammonia which is lost to the atmosphere is called
- Mineralization
- Immobilization
- Volatilization
- Denitrification
- Nitrification
Question of
A material spread on the soil surface , like straw , leaves , plastic or stones to protect soil from rain impact , evaporation and heaving is called
- Levee
- Talus
- Mulch
- Aquifer
- Loess
Question of
The soil is storehouse of plant nutrients . The nutrients are stored in many forms , some very available to plants , some less so. . How do you called the ability of the soil to supply nutrients for plant growth
- Fertilization
- Soil conservation
- Soil fertility
- Soil colloids
- None of the choice
Question of
The primary macronutrients , sometimes called fertilizer elements , are not usually available in large enough amount for best growth , most like they are added to soil by fertilization . The three primary macronutrients are as follows , except one:
- Phosphorus
- Calcium
- Potassium
- Nitrogen
- None of the choices

Report

Soil Science – Agriculture Board Exam Reviewer (Set 2)

Soil is a medium for plant growth because plant depends on soil to supply four needs Such as , except one:

Soil is made of solid particles , between these solid particles are pore spaces that contain gases and / or water . This arrangement of solid particles and pore spaces is called

Agricultural uses of soil are as follows, except one:

Plant leaves collect sunlight to use the sun’s energy in the process known as

The roots absorb water and nutrients from the soil solution . Water reaches roots in two ways either

Eighteen nutrients are required by the plant , how much nutrients obtain by plant in the soil

A vertical section through the soil extending well into the unweathered parent material and exposing all the horizons is called

A section of soil extending from the surface to the depth of root penetration of the deepest rooted plants

The thin layer of soil and is defined as the surface mineral horizon with an organic matter accumulation is called

The basic material of the earth’s crust is called

A soils whose parent materials were carried and deposited in moving fresh water to form sediments is called

Five factors govern the soil development process are, except one:

Parent material deposited more simply by sliding or rolling down a slope . This material is scattered in hilly or mountainous areas and is called

An organic layer made of wholly or partially decayed plant and animal debris . This horizon generally occurs in a virgin soil is called

The ease with which air and water and roots pass more through the soil is called

A factor govern the soil development process which affects soil formation by changing water movement and soil temperature which result in low area have a deep, rich soil that drain slowly while causes erosion in slopes thin soil is

This part of the soil profile is where most plant roots grow and it is consist of A. E and B horizons together is called

Most mineral soils come from parent materials moved from one area to another by , except one:

A term that refers to the size of the mineral particles in the soil. The size of soil particles, in turn, affects such as soil traits as water holding capacity and aeration is called

A term refers to the behavior of soil when the pressure is applied . It relates to the degree that soil particles stick to one another and mostly results from certain types of clay is called

Plasticity is how easily soil can molded between the fingers while to determine stickiness, some soil is pressed between thumb and forefinger , and the amount that sticks to the fingers is noted. This stickiness and plasticity is describe in what soil?

Clumps of soil caused by tillage is called

The physical condition of the soil for growing plants results from the interaction of consistence , texture, structure and permeability which is called

Governs the way water behaves in the soil and influences how easily a soil can be worked is a physical property of the soil called

Soil consistence measure traits such as

Improving tilth is largely a matter of improving structure and avoiding compaction. The following practices can help improve tilth, except one:

Nutrients plants get from air and water are , except one:

A soil color which suggest that the soil is waterlogged for part but not all of the year

The arrangement of soils into classes of several levels

Soil water moves upward in the soil as the surface layer dry moving from areas of high potential to areas of low potential . This upward movement is called

That part of soil water that can be absorbed by plant roots is called

A soil which held loosely and can be absorbed by plants is called sometimes as capillary water is known as

The lack of oxygen results from water-logging so bluish – gray color indicates poor soil drainage . The occurrence of this color is called

The absorption of water by plants roots is also govern by the

Breaking of plant stems because of stem , weakness , often caused by excess nitrogen and/on potassium is called

Fungi that form a symbiotic relationship with plant roots . The fungi help the plant absorb water and nutrients while they receive food from the plant is called

Many actinomycete species produce chemicals that stop the growth of other microorganism is a phenomenon called

A process by which certain soil microbes convert organic nitrogen to ammonia is called

A certain bacteria blue-green algae , and actinomycetes can use it . They are absorb the gas and convert it to ammonia that plants can use . This process is called

Fruiting bodies grow from the mycelium . These bodies release spores that may be considered the seeds of what?

That portion of the soil that includes animal and plant remains at various stages of decay is called

A type of soil water which is too tightly held by adhesion to be used by plants is called

Rainfall that cannot be absorbed into soil fast enough runs into streams or lakes . This water is called

Some crop are planted to be turned into the soil rather than for harvest . This practice is called

These nutrients are held in the soil because they are attracted to clay and humus

Dissolved ions are the most readily available form of nutrients . The mixture of ions soil water is termed

Applies to the loss of nitrogen in ammonium fertilizers and urea as soil reactions convert it to ammonia which is lost to the atmosphere is called

A material spread on the soil surface , like straw , leaves , plastic or stones to protect soil from rain impact , evaporation and heaving is called

The soil is storehouse of plant nutrients . The nutrients are stored in many forms , some very available to plants , some less so. . How do you called the ability of the soil to supply nutrients for plant growth

The primary macronutrients , sometimes called fertilizer elements , are not usually available in large enough amount for best growth , most like they are added to soil by fertilization . The three primary macronutrients are as follows , except one:

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