BIOL 152 Moore Exam 5 UPDATED
ACTUAL Exam Questions and CORRECT
Answers
Ecology - CORRECT ANSWER - The study of interactions among organisms and their
environment
Key population features - CORRECT ANSWER - Distribution, growth, and size/density
Random distribution - CORRECT ANSWER - When individuals in a population have an
equal probability of occurring anywhere, with no pattern. Ex: dandelions
Random distribution causes - CORRECT ANSWER - Caused by neutral interactions
between individuals and the local environment
Uniform Distribution - CORRECT ANSWER - Individuals are evenly spaced throughout
the environment. Ex: penguins
Uniform Distribution causes - CORRECT ANSWER - Caused by antagonistic interactions
between individuals OR the local depletion of resources
Clumped distribution - CORRECT ANSWER - Individuals live in areas of high local
abundance separated by areas of low abundance. Most common type. Ex: elephants or other herd
animals
Clumped distribution causes - CORRECT ANSWER - Caused by attraction between
individuals OR attraction of individuals to a common resource
Allelopathy - CORRECT ANSWER - Production of secondary compounds by plants that
prevent growth of other organisms around them, often seen in uniform distribution
, Factors affecting population size - CORRECT ANSWER - Births and immigration add,
deaths and emigration subtract
delta-N = N2 - N1 = (B - D) + (I - E) - CORRECT ANSWER - The formula for population
size change
r = (delta-N/delta-t)/N1 - CORRECT ANSWER - Growth per Capita (intrinsic rate of
growth) Formula
Nt = N1(1 + r)^t - CORRECT ANSWER - Formula for the Size of a Population after a Set
amount of Time
Exponential growth - CORRECT ANSWER - A pattern of data that shows greater
increases with passing time, creating a j-shaped curve
Delta-N/Delta-t = rN - CORRECT ANSWER - the Exponential Growth Formula
Exponential Curve - CORRECT ANSWER -
Things that slow population growth - CORRECT ANSWER - Diseases, competition over
resources, resource limitation, and predation. These are affected by population size.
Logistic growth - CORRECT ANSWER - Population growth that is controlled by limited
resources, plateauing at the carrying capacity to create an s-shaped curve
Carrying capacity (K) - CORRECT ANSWER - the max population size of a species that
the environment and resources can sustain indefinitely
ACTUAL Exam Questions and CORRECT
Answers
Ecology - CORRECT ANSWER - The study of interactions among organisms and their
environment
Key population features - CORRECT ANSWER - Distribution, growth, and size/density
Random distribution - CORRECT ANSWER - When individuals in a population have an
equal probability of occurring anywhere, with no pattern. Ex: dandelions
Random distribution causes - CORRECT ANSWER - Caused by neutral interactions
between individuals and the local environment
Uniform Distribution - CORRECT ANSWER - Individuals are evenly spaced throughout
the environment. Ex: penguins
Uniform Distribution causes - CORRECT ANSWER - Caused by antagonistic interactions
between individuals OR the local depletion of resources
Clumped distribution - CORRECT ANSWER - Individuals live in areas of high local
abundance separated by areas of low abundance. Most common type. Ex: elephants or other herd
animals
Clumped distribution causes - CORRECT ANSWER - Caused by attraction between
individuals OR attraction of individuals to a common resource
Allelopathy - CORRECT ANSWER - Production of secondary compounds by plants that
prevent growth of other organisms around them, often seen in uniform distribution
, Factors affecting population size - CORRECT ANSWER - Births and immigration add,
deaths and emigration subtract
delta-N = N2 - N1 = (B - D) + (I - E) - CORRECT ANSWER - The formula for population
size change
r = (delta-N/delta-t)/N1 - CORRECT ANSWER - Growth per Capita (intrinsic rate of
growth) Formula
Nt = N1(1 + r)^t - CORRECT ANSWER - Formula for the Size of a Population after a Set
amount of Time
Exponential growth - CORRECT ANSWER - A pattern of data that shows greater
increases with passing time, creating a j-shaped curve
Delta-N/Delta-t = rN - CORRECT ANSWER - the Exponential Growth Formula
Exponential Curve - CORRECT ANSWER -
Things that slow population growth - CORRECT ANSWER - Diseases, competition over
resources, resource limitation, and predation. These are affected by population size.
Logistic growth - CORRECT ANSWER - Population growth that is controlled by limited
resources, plateauing at the carrying capacity to create an s-shaped curve
Carrying capacity (K) - CORRECT ANSWER - the max population size of a species that
the environment and resources can sustain indefinitely
