Ducks Unlimited UPDATED Exam Questions
and CORRECT Answers
Ecological Levels of Organization (from biggest to smallest) - CORRECT ANSWER -
Biosphere (biomes), Ecosystem, Communities, Populations, Organism
Biomes - CORRECT ANSWER - Aquatic, Forests, Grasslands, Wetlands
Denitrification (nitrogen cycle) - CORRECT ANSWER - Where nitrogen molecules are
"fixed" back to usable nitrogen. This is done naturally by legumes, algae, bacteria, and lightning
Phosphorus - CORRECT ANSWER - Absorbed by plants through their roots
Photosynthesis - CORRECT ANSWER - A process used by plants and other autotrophs to
capture light and energy and use it to power chemical reactions that convert carbon dioxide and
water into oxygen and chemical energy.
Transpiration - CORRECT ANSWER - Evaporation of water from the leaves of a plant
Respiration - CORRECT ANSWER - Inhalation and exhalation of air.
Nutrient cycles are required by organisms for... - CORRECT ANSWER - Growth,
reproduction, and maintenance (not sleep)
Chlorophyll - CORRECT ANSWER - Green pigment in plants that absorbs light energy
used to carry out photosynthesis
Bog - CORRECT ANSWER - Wetland supplied by rainwater, acidic so they accumulate
dead and carnivorous plants
, Fen - CORRECT ANSWER - Wetland that is supplied by groundwater
Marsh - CORRECT ANSWER - Wetland that has grasses and reeds. Can be tidal or non-
tidal.
Swamp - CORRECT ANSWER - Forested (woody) wetland with large trees and shrubs
Niche - CORRECT ANSWER - Role of the organism in the community. Can be
competition, predation, parasitism, mutualism
Mutualism - CORRECT ANSWER - A positive interaction and niche where both species
benefit
Commensalism - CORRECT ANSWER - A positive interaction that is not a niche because
one species benefits while the other is unaffected
Competition - CORRECT ANSWER - A negative interaction and niche between two
organisms for the same resource
Predation - CORRECT ANSWER - A negative interaction and niche where one species
kills another for food
Succession - CORRECT ANSWER - The series of predictable changes that occur in a
community over time due to geological disturbances
Climax community - CORRECT ANSWER - A stable, mature community that undergoes
little or no change in species over time after its final succession
Primary succession - CORRECT ANSWER - An ecological succession that begins in an
area where no biotic community previously existed like glaciers receding or volcanoes erupting.
and CORRECT Answers
Ecological Levels of Organization (from biggest to smallest) - CORRECT ANSWER -
Biosphere (biomes), Ecosystem, Communities, Populations, Organism
Biomes - CORRECT ANSWER - Aquatic, Forests, Grasslands, Wetlands
Denitrification (nitrogen cycle) - CORRECT ANSWER - Where nitrogen molecules are
"fixed" back to usable nitrogen. This is done naturally by legumes, algae, bacteria, and lightning
Phosphorus - CORRECT ANSWER - Absorbed by plants through their roots
Photosynthesis - CORRECT ANSWER - A process used by plants and other autotrophs to
capture light and energy and use it to power chemical reactions that convert carbon dioxide and
water into oxygen and chemical energy.
Transpiration - CORRECT ANSWER - Evaporation of water from the leaves of a plant
Respiration - CORRECT ANSWER - Inhalation and exhalation of air.
Nutrient cycles are required by organisms for... - CORRECT ANSWER - Growth,
reproduction, and maintenance (not sleep)
Chlorophyll - CORRECT ANSWER - Green pigment in plants that absorbs light energy
used to carry out photosynthesis
Bog - CORRECT ANSWER - Wetland supplied by rainwater, acidic so they accumulate
dead and carnivorous plants
, Fen - CORRECT ANSWER - Wetland that is supplied by groundwater
Marsh - CORRECT ANSWER - Wetland that has grasses and reeds. Can be tidal or non-
tidal.
Swamp - CORRECT ANSWER - Forested (woody) wetland with large trees and shrubs
Niche - CORRECT ANSWER - Role of the organism in the community. Can be
competition, predation, parasitism, mutualism
Mutualism - CORRECT ANSWER - A positive interaction and niche where both species
benefit
Commensalism - CORRECT ANSWER - A positive interaction that is not a niche because
one species benefits while the other is unaffected
Competition - CORRECT ANSWER - A negative interaction and niche between two
organisms for the same resource
Predation - CORRECT ANSWER - A negative interaction and niche where one species
kills another for food
Succession - CORRECT ANSWER - The series of predictable changes that occur in a
community over time due to geological disturbances
Climax community - CORRECT ANSWER - A stable, mature community that undergoes
little or no change in species over time after its final succession
Primary succession - CORRECT ANSWER - An ecological succession that begins in an
area where no biotic community previously existed like glaciers receding or volcanoes erupting.
