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APES MIDTERM EXAM 2026
QUESTIONS AND ANSWERS| ACE
YOUR GRADES.
Assuming that the autotrophs in an ecosystem contain 650,000
kcal of energy, the third trophic level of organisms could expect to
contain approximately _____________ of energy. -correct answer
-6505 kcal
The site we are studying as a class is part of which of the
following "protected land" types? -correct answer -Nature
preserve
The annual productivity of any ecosystem is greater than the
annual increase in biomass of the herbivores because -correct
answer -Plants convert energy input into biomass more efficiently
than animals
The main difference between primary and secondary succession
is that -correct answer -Primary succession occurs on barren,
rocky areas and secondary succession does not.
, Page | 2
All of the following are reasons to create parks and reserves
EXCEPT -correct answer -provide for controlled resource
extraction
(From a diagram) The snakes is acting as a -correct answer -
secondary consumer
(From a diagram) Between which two organisms would there
MOST LIKELY be the greatest competition? -correct answer -
Arachnid and roadrunner
One producer in this food web is -correct answer -Cacti
The functional role of a species in its community is its -correct
answer -niche
Heavy rains and mudslides cause a river to change course,
isolating two groups of lizards from one another, over a long
period of time, -correct answer -The groups will probably diverge
genetically, and speciation may occur
, Page | 3
The energy content and biomass of _____________ is lowest in
any food web -correct answer -Top carnivores
A small section of prairie grasses, over a year, produces enough
biomass to feed insects, mince, rabbits, birds, deer, antelopes,
and a host of decomposers. The amount of food potentially
available to the herbivores is the _________ -correct answer -net
primary production
Global biodiversity exists in a number of patterns. The largest and
most obvious of these is that biodiversity is -correct answer -
greatest at the equator and drops as you move farther north or
south
"Ecosystem services" include -correct answer -Pollination of crop
plants
Communities that remain in place until a disturbance restarts the
process of sucession are -correct answer -climax communities
APES MIDTERM EXAM 2026
QUESTIONS AND ANSWERS| ACE
YOUR GRADES.
Assuming that the autotrophs in an ecosystem contain 650,000
kcal of energy, the third trophic level of organisms could expect to
contain approximately _____________ of energy. -correct answer
-6505 kcal
The site we are studying as a class is part of which of the
following "protected land" types? -correct answer -Nature
preserve
The annual productivity of any ecosystem is greater than the
annual increase in biomass of the herbivores because -correct
answer -Plants convert energy input into biomass more efficiently
than animals
The main difference between primary and secondary succession
is that -correct answer -Primary succession occurs on barren,
rocky areas and secondary succession does not.
, Page | 2
All of the following are reasons to create parks and reserves
EXCEPT -correct answer -provide for controlled resource
extraction
(From a diagram) The snakes is acting as a -correct answer -
secondary consumer
(From a diagram) Between which two organisms would there
MOST LIKELY be the greatest competition? -correct answer -
Arachnid and roadrunner
One producer in this food web is -correct answer -Cacti
The functional role of a species in its community is its -correct
answer -niche
Heavy rains and mudslides cause a river to change course,
isolating two groups of lizards from one another, over a long
period of time, -correct answer -The groups will probably diverge
genetically, and speciation may occur
, Page | 3
The energy content and biomass of _____________ is lowest in
any food web -correct answer -Top carnivores
A small section of prairie grasses, over a year, produces enough
biomass to feed insects, mince, rabbits, birds, deer, antelopes,
and a host of decomposers. The amount of food potentially
available to the herbivores is the _________ -correct answer -net
primary production
Global biodiversity exists in a number of patterns. The largest and
most obvious of these is that biodiversity is -correct answer -
greatest at the equator and drops as you move farther north or
south
"Ecosystem services" include -correct answer -Pollination of crop
plants
Communities that remain in place until a disturbance restarts the
process of sucession are -correct answer -climax communities
