KSU Biology 198 Exam 2 Questions With
100% Correct Answers
Ecology
The study of interactions between life forms and their environment.
Ecosystem
All living organisms in an environment plus the physical and chemical environments in which they live.
GPP (Gross Primary Productivity)
All the sunlight that hits a given area, primary producers use it to grow and reproduce, then converted
to NPP
NPP
The usable energy left over for consumers is called ____. It helps determine how many trophic levels
an ecosystem can hold.
Entropy
Randomness
Second
______ Law of Thermodynamics: as energy is passed on (converted) some is lost as heat. This
increases entropy.
Nutrients
What is cycled in biogeochemical cycles?
Nutrients
_______ could not cycle if energy was not present.
Autotroph
A _______ is a producer, meaning it makes its own "food" by converting energy into a usable form for
the consumers to use. Nutrients could not cycle without this energy flow.
Heterotroph
A ________ is a consumer. If it didn't consume producers, no nutrients would be passed on.
Producer
An organism that makes its own food.
Decomposer
An organism that breaks down dead and decaying organisms.
Consumer
An organism that eats other organisms to gain energy.
, Trophic
A ______ level groups organisms into how much energy is available to them and how much they
have.
Food Chain
The linear relationships of feeding.
Food Web
All relationships in regard to eating habits. Includes decomposers.
rainforest
What biome has the highest NPP?
Population
a group of the same species living within the same area.
age structure
Scientists study __________ because the proportion of individuals in "childbearing age" is directly
related to the grown of the population.
Sex Ratio
The idea that if there are more men than women, less babies will be born. Where as if there were
more women, more babies would be born and the population would be able to grow and survive.
Population Distribution
The idea that if a species exists in several different areas, then the species will be very successful is
called ___________.
Per Capita growth rate
=b-d
how many individuals are added to the population per individual already living.
exponential
G=rN is the equation for __________ growth
Carrying Capacity
_________ limits the population growth. Logistic growth hits carrying capacity and the population
levels off.
Logistic Curve
A ___________ describes the growth of a population when the effects of the carrying capacity can be
seen. something is limiting the population size, the amount of NPP available.
G=rN(K-N/K)
When it reaches carrying capacity, no more growth occurs.
100% Correct Answers
Ecology
The study of interactions between life forms and their environment.
Ecosystem
All living organisms in an environment plus the physical and chemical environments in which they live.
GPP (Gross Primary Productivity)
All the sunlight that hits a given area, primary producers use it to grow and reproduce, then converted
to NPP
NPP
The usable energy left over for consumers is called ____. It helps determine how many trophic levels
an ecosystem can hold.
Entropy
Randomness
Second
______ Law of Thermodynamics: as energy is passed on (converted) some is lost as heat. This
increases entropy.
Nutrients
What is cycled in biogeochemical cycles?
Nutrients
_______ could not cycle if energy was not present.
Autotroph
A _______ is a producer, meaning it makes its own "food" by converting energy into a usable form for
the consumers to use. Nutrients could not cycle without this energy flow.
Heterotroph
A ________ is a consumer. If it didn't consume producers, no nutrients would be passed on.
Producer
An organism that makes its own food.
Decomposer
An organism that breaks down dead and decaying organisms.
Consumer
An organism that eats other organisms to gain energy.
, Trophic
A ______ level groups organisms into how much energy is available to them and how much they
have.
Food Chain
The linear relationships of feeding.
Food Web
All relationships in regard to eating habits. Includes decomposers.
rainforest
What biome has the highest NPP?
Population
a group of the same species living within the same area.
age structure
Scientists study __________ because the proportion of individuals in "childbearing age" is directly
related to the grown of the population.
Sex Ratio
The idea that if there are more men than women, less babies will be born. Where as if there were
more women, more babies would be born and the population would be able to grow and survive.
Population Distribution
The idea that if a species exists in several different areas, then the species will be very successful is
called ___________.
Per Capita growth rate
=b-d
how many individuals are added to the population per individual already living.
exponential
G=rN is the equation for __________ growth
Carrying Capacity
_________ limits the population growth. Logistic growth hits carrying capacity and the population
levels off.
Logistic Curve
A ___________ describes the growth of a population when the effects of the carrying capacity can be
seen. something is limiting the population size, the amount of NPP available.
G=rN(K-N/K)
When it reaches carrying capacity, no more growth occurs.
