BIO 148 Exam Questions With Verified
Answers 100%
Which group is at a higher trophic level: herbivores or detritivores? - Answer- It depends
on what the detritivores are eating.
In what type of ecosystem can you find an inverted biomass pyramid? - Answer-
Aquatic.
What are the three components of trophic efficiency? - Answer- Consumption,
assimilation, production.
What is top-down forcing? - Answer- When energy flow and NPP in an ecosystem is
determined by species interactions at higher trophic levels.
What is a key determinant of the number of trophic levels in an ecosystem? - Answer-
Ecosystem size.
Which trophic level in an ecosystem's energy pyramid accounts for the most energy? -
Answer- Primary producers.
What is production efficiency? - Answer- The proportion of assimilated biomass used to
produce new consumer biomass.
If a species' preferred prey becomes extinct, what will happen to the predator's
population size? - Answer- It will get smaller over time because the less nutritious prey
reduces the predator's ability to survive and reproduce.
What drives the population cycling of lynx and snowshoe hares? - Answer- All of the
listed factors contribute.
What is a parasitoid? - Answer- An animal that lays its eggs inside the body of another
species.
Which animals eat foods containing more nitrogen? - Answer- Carnivores.
What is the difference between constitutive and inducible plant defenses against
herbivores? - Answer- Constitutive defenses are always there, inducible defenses occur
when herbivory happens.
What is the purpose of mast seeding by plants? - Answer- To overwhelm seed
predators and ensure some seeds survive.
Answers 100%
Which group is at a higher trophic level: herbivores or detritivores? - Answer- It depends
on what the detritivores are eating.
In what type of ecosystem can you find an inverted biomass pyramid? - Answer-
Aquatic.
What are the three components of trophic efficiency? - Answer- Consumption,
assimilation, production.
What is top-down forcing? - Answer- When energy flow and NPP in an ecosystem is
determined by species interactions at higher trophic levels.
What is a key determinant of the number of trophic levels in an ecosystem? - Answer-
Ecosystem size.
Which trophic level in an ecosystem's energy pyramid accounts for the most energy? -
Answer- Primary producers.
What is production efficiency? - Answer- The proportion of assimilated biomass used to
produce new consumer biomass.
If a species' preferred prey becomes extinct, what will happen to the predator's
population size? - Answer- It will get smaller over time because the less nutritious prey
reduces the predator's ability to survive and reproduce.
What drives the population cycling of lynx and snowshoe hares? - Answer- All of the
listed factors contribute.
What is a parasitoid? - Answer- An animal that lays its eggs inside the body of another
species.
Which animals eat foods containing more nitrogen? - Answer- Carnivores.
What is the difference between constitutive and inducible plant defenses against
herbivores? - Answer- Constitutive defenses are always there, inducible defenses occur
when herbivory happens.
What is the purpose of mast seeding by plants? - Answer- To overwhelm seed
predators and ensure some seeds survive.
