APES Winter Final Exam |73 Verified Q’s and A’s
Which is not an abiotic factor - -bacteria
-Which is a biotic factor - -producers
-Which biotic? - -decomposers and producers
-Ecosystem boundaries are best defined as - -subjective borders ecompassing large or
small areas of land or water
-Choose the correct sequence for energy flow within an ecosystem - -producers -->
herbivores --> carnivores --> scavengers
-Which is a product of photosynthesis? - -glucose
-The waste product in photosynthesis is - -Oxygen
-Which describes a key difference between photosynthesis and aerobic respiration? - -
photosynthesis generates organic compounds whereas aerobic respiration generates
inorganic compounds
-which are needed for photosynthesis - -water, solar energy, and carbon dioxide
-which group of organisms performs cellular respiration - -autotrophs, heterotrophs,
decomposers
-What are the physical products of cellular respiration? - -water and carbon dioxide
-Which shows the complex interactions among species within an ecosystem? - -food web
-Which is the approximate efficiency of energy transfer as energy flows through the food
chain? - -10%
-A forest has a GPP of 3.8 kg C/m^2/year and the rate of cellular respiration is 2.4 kg
C/m^2/year. What is the NPP? - -1.4 kg C/m^2/year
-An ecosystem has an ecological efficiency of 10 percent. If the producer level contains
10,000 kilocalories of energy, how much energy does the tertiary consumer level contain? -
-10 kcal
-How is the majority of energy within an ecosystem lost? - -heat loss
-Which organism is a producer? - -grass
, -Which organism is a primary consumer? - -hare
-Which organism is a decomposer? - -bacteria
-Which organism is a secondary consumer? - -lion
-Which organism occupies a lower trophic level than the others? - -giraffe
-At which trophic level are dragonflies that consume mosquitoes that feed on herbivorous
mammals? - -tertiary consumers
-If there are 10,000 kilocalories of energy available at producer level, how many
kilocalories will be available at the tertiary level? - -10
-What type of organism would you expect to find on the lowest level of ecological pyramid?
- -grasses
-In any kind of ecosystem, for example, aquatic, desert, or tropical forest, which trophic
level is always needed - -autotrophs
-During which stage of the hydrological cycle is water released to the atmosphere form
plants? - -transpiration
-In the hydrologic cycle, evaporation - -is caused by heat from the sun
-At which point in the hydrologic cycle are conditions most likely to contribute to the
development an algal bloom? - -runoff
-Which is NOT a part of the carbon cycle? - -transpiration
-Which element is the most abundant in the atmosphere? - -nitrogen
-In an ecosystem, a specialized type of bacteria that can convert ammonium into nitrate
suddenly dies out. Without these bacteria, which process would be directly affected first? -
-nitrification
-What is the major source of phosphorus on land? - -compounds released from the
weathering of rocks
-Which from of nitrogen do producers readily utilize? - -nitrate and ammonium
-Which biogeochemical cycle has the most direct effect on acid rain - -the sulfur cycle
-which is true about an ecosystem that is highly resistant to disturbances - -there are no
major impacts on the flows of energy or matter
Which is not an abiotic factor - -bacteria
-Which is a biotic factor - -producers
-Which biotic? - -decomposers and producers
-Ecosystem boundaries are best defined as - -subjective borders ecompassing large or
small areas of land or water
-Choose the correct sequence for energy flow within an ecosystem - -producers -->
herbivores --> carnivores --> scavengers
-Which is a product of photosynthesis? - -glucose
-The waste product in photosynthesis is - -Oxygen
-Which describes a key difference between photosynthesis and aerobic respiration? - -
photosynthesis generates organic compounds whereas aerobic respiration generates
inorganic compounds
-which are needed for photosynthesis - -water, solar energy, and carbon dioxide
-which group of organisms performs cellular respiration - -autotrophs, heterotrophs,
decomposers
-What are the physical products of cellular respiration? - -water and carbon dioxide
-Which shows the complex interactions among species within an ecosystem? - -food web
-Which is the approximate efficiency of energy transfer as energy flows through the food
chain? - -10%
-A forest has a GPP of 3.8 kg C/m^2/year and the rate of cellular respiration is 2.4 kg
C/m^2/year. What is the NPP? - -1.4 kg C/m^2/year
-An ecosystem has an ecological efficiency of 10 percent. If the producer level contains
10,000 kilocalories of energy, how much energy does the tertiary consumer level contain? -
-10 kcal
-How is the majority of energy within an ecosystem lost? - -heat loss
-Which organism is a producer? - -grass
, -Which organism is a primary consumer? - -hare
-Which organism is a decomposer? - -bacteria
-Which organism is a secondary consumer? - -lion
-Which organism occupies a lower trophic level than the others? - -giraffe
-At which trophic level are dragonflies that consume mosquitoes that feed on herbivorous
mammals? - -tertiary consumers
-If there are 10,000 kilocalories of energy available at producer level, how many
kilocalories will be available at the tertiary level? - -10
-What type of organism would you expect to find on the lowest level of ecological pyramid?
- -grasses
-In any kind of ecosystem, for example, aquatic, desert, or tropical forest, which trophic
level is always needed - -autotrophs
-During which stage of the hydrological cycle is water released to the atmosphere form
plants? - -transpiration
-In the hydrologic cycle, evaporation - -is caused by heat from the sun
-At which point in the hydrologic cycle are conditions most likely to contribute to the
development an algal bloom? - -runoff
-Which is NOT a part of the carbon cycle? - -transpiration
-Which element is the most abundant in the atmosphere? - -nitrogen
-In an ecosystem, a specialized type of bacteria that can convert ammonium into nitrate
suddenly dies out. Without these bacteria, which process would be directly affected first? -
-nitrification
-What is the major source of phosphorus on land? - -compounds released from the
weathering of rocks
-Which from of nitrogen do producers readily utilize? - -nitrate and ammonium
-Which biogeochemical cycle has the most direct effect on acid rain - -the sulfur cycle
-which is true about an ecosystem that is highly resistant to disturbances - -there are no
major impacts on the flows of energy or matter
