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Worksheets2018 State ND FFA ENR Test Key
Total questions: 50
Worksheet time: 25mins
Which of the following is not a process of weathering which breaks down rocks?
wetting
hammering
freezing
thawing
pH of water is a measure of .........
cations
oxygen ions
hydrogen ions
salts
What is all the practices used to maintain our ability to produce food, fiber and shelter?
best management practices
recycling
sustainable agriculture
symbiosis
Which of the following is the method of reducing acid emissions that uses a lime water spray through a smoke stack, may be 99% effective and is required by all new or modified major coal-fired plants built after 1977?
fluidized bed combustion
coal washing
scrubbers
reductions in electricity consumptions
One species of fish that is often undesirable in lakes and pond is.....
bass
carps
sunfish
trout
The predictable and gradual change from one community with the passage of time is called....
community change
ecological change
ecosystem drift
ecological succession
In animal's water;
Promotes chemical activates
Regulates Temperature
Transports nutrients though blood stream
all of the above
Which of the following influences the solubility of oxygen?
alkalinity
pH
temperature
water hardness
Which of the following are the basis of food chains?
carnivores
consumers
herbivores
producers
Which of the following is a true statement about soil surveys?
Soil surveys are established on township wide basis
Soil surveys are paid for by the national committee for soil surveys
Photographs that are used in soil surveys are taken from vehicles
Soil surveys give the soil characteristics of a county
Which of the following is least likely to be considered a wetland?
a floodplain
a marsh
a plateau
a prairie pothole
Which of the following is NOT an exhaustible resource?
Soil
Mineral resources
Petroleum
Atmospheric air
An agronomist is primarily concerned with what use of soil?
construction
acting as a filter for the hydrologic cycle
supporting crop growth
natural beauty
Which of the following is the process by which nitrogen gas is converted into plant available nitrogen?
denitrification
volatilization
nitrification
nitrogen fixation
All of the following are categories of forest fires except which of the following:
Ground Fires
Area Fires
Surface Fires
Crown Fires
Which of these has the following characteristics; Prolonged presence of water, hydric soils and presence of hydrophytic plants?
tundra
wetland
grassland
bottomland hardwood
What are the three factors that determine the severity of a plant disease?
a plant nutrient status, genetic engineering, rainfall
temperature, the diversity of plants in a field, the number of bacteria in the soil
plant susceptibility to a disease, the presence of a disease organism, environmental conditions favorable to disease infestation
the presence of disease organisms, plant nutrient status, plant growth rate
Which of the following is not an example of a type of hydroponic system?
conventional bench culture
aeroponic culture
aggregate culture
nutriculture
Which of the following is an example of bioremediation?
insects pollinating flowers
sustainable agriculture
bacteria breaking down hydrocarbons in oil spills
birds using dead trees for nest sites
The process of bacteria changing dead organisms into ammonia, then to nitrites, and finally to nitrites useful to plants called _______.
ammonification
electrolysis
nitrification
photosynthesis
Abiotic factors influencing ecosystems include......
food chains and the loss of heat at each step
producers, consumers, and decomposers
the living parts of an ecosystem
water, soil, air, climate, and space
Dried manure can be used for.......
feed additives
gravel road beds
making storage basins
runoff diversions and control
Which has the least tendency to form clods, the least moisture holding capacity, and the least fertility?
clay
loam
sand
silt
Which of the following is not a true statement about natural disasters?
Natural disasters are episodes in which the process of nature cause human or animal suffering
Population density has no effect on how many people are injured by natural disasters
Most of the processes that are considered natural disasters have been occurring for thousands of years
Hurricanes are considered natural disasters
Which of the following is not a benefit of agricultural chemicals?
killing insects that destroy crops
killing weeds that are harmful to crops
leaching of chemicals into groundwater
supplying nutrients needed by crops
Which of the following is a benefit of applying animal manure to soil?
over application causes excess heavy metals in the soil
excess salts from over application of manure
manures running into streams and lakes
increasing organic matter in soils
Which of the following is not a benefit of planting grass on bare soil?
Prevents raindrops from striking bare soil and breaking it loose
Keeps all erosion from occurring even in very strong rains
Plant roots tend to hold soil in place so that it is less susceptible to erosion
Adding organic matter to soil
Which of the following is considered a mechanical erosion control?
terracing
strip cropping
cover crops
shelter belts
Ecosystems can be studied at three different levels: (1) how they work, (2) what they look like, and (3)......
what makes up their food webs
what plant communities are dominant
what stage ecological succession they exhibit
what values we as humans place on them
Which of the following is a benefit of crop rotation?
The muddy water is held long enough for the sediment to settle out in the form of mud.
Soil tilth is better maintained.
Each row acts like a small dam to stop runoff from moving straight downhill.
Runoff is conducted across the slope to some protected areas
The strategies known as the "Three R's," include . . .
reduce, renew, and/or recycle.
reduce, redirect, and/or renew
redirect, recycle, and/or renew
reduce, reuse, and/or recycle
A major cost associated with solid waster incineration is. . . . . . . .
pollution monitors and scrubbers
generating electricity
generating stream
burning coal and stream
What is the purpose of adding calcium carbonate to soil?
to improve the structure of the soil
to increase the pH of soil (decrease acidity)
to replace nitrogen of soil
to prevent erosion by working as an adhesive to soil
Soil organic matter is measured in which of the following units?
ounces
inches
percentages
pounds
What is the purpose of adding calcium carbonate to soil?
to improve the structure of the soil
to increase the pH of soil (decrease acidity)
to replace nitrogen of soil
to prevent erosion by working as an adhesive to soil
The fact that some energy is lost in the form of heat at each step in the food chain means that there must be . . . .. . . .
more producers than consumers
more consumers than producers
more decomposers than producers
more producers than decomposers
The signal word "caution" on a label indicates __________.
no toxicity
low toxicity
moderate toxicity
high toxicity
The controllable component of risk associated with chemical pesticides is ___________.
absorption
probability
exposure
tolerance
Acid deposition is. . . . . .
the ability of limestone to act as a buffer for lakes.
mixing of dry acidic particle with moisture in the atmosphere.
the leaching of toxic elements out of rocks and soils.
the accumulation of aluminum, leached from rocks and sediments, on the gills of fish.
Which of the following toxic substances does not dissolve or suspend in water?
heavy metals
gasoline
oil
antifreeze
Decaying plant and animal matter produce. . .
chlorofluorocarbons
methane
ozone
nitrous oxide
Material placed on soil to break the fall of raindrops is called _________.
contour farming
lime
mulch
strip cropping
When you measure the total concentration of all dissolved ions in water you are measuring the . . . .
dissolved oxygen
temperature
saturation point
salinity
Which of the following chemical elements is not needed to form an organic chemical?
Chlorine
Hydrogen
Carbon
Oxygen
Which of the following soil particles is the smallest?
clay
organic matter
sand
silt
What is an ecosystem?
the area of the earth that can support life
the living and nonliving factors in a particular environment
the specific way of life of each plant or animal
the practices used to maintain the ability to produce food, fiber and shelter
Which of the following is a function of soil as a medium for plant growth?
serving as an aggregate for asphalt and concrete
serving as a road bed
supplying water to roots
supplying material for land fills
When two species of wildlife live together for the benefit of both, the relationship is called _________.
serving as an aggregate for asphalt and concrete
serving as a road bed
supplying water to roots
supplying material for land fills
All of the following are examples of recommended practices to reduce or prevent wind and water erosion except for . . .
conservation tillage
crop rotation
sheet erosion
strip cropping
Which of the following is a manure treatment system?
Solid manure stack
Anaerobic lagoon
Earth bank storage
Underground pit
