Worksheets5.1 How Populations Grow
Total questions: 17
Worksheet time: 9mins
How do ecologists study populations?
geographic range
density and distribution
growth rate
age structure
all or correct
A population is a:
group of organisms of more than one species that live in a given area
group of organisms of a single species that lives in a given area
group of biotic and abiotic factors in an ecosystem
a group of biomes
The area inhabited by a population is called its
growth rate
age structure
density and distribution
geographic range
Population density refers to:
the number of individuals per unit area
the number of individuals in a population
the number of biotic factors in an ecosystem
the birth rate
What type of population distribution is shown?
random
uniform
clumped
The far left population distribution shown is:
random
uniform
clumped
The far right population distribution is best described as:
random
uniform
clumped
A population’s ___________ determines whether the population size increases, decreases, or stays the same.
birth rate
growth rate
death rate
logistic curve
To fully understand a plant or animal population, researchers need to know the population’s _____________—the number of males and females of each age a population contains.
density and distribution
survivorship curve
birth rate
age structure
The factors that can affect population size are
birth rate
death rate
rate at which individuals enter or leave the population
all answers are correct
A population can ________ when its birth rate is higher than its death rate.
shrink
stay constant
grow
A population may grow if individuals move into its range from elsewhere, a process called ____________.
immigration
emigration
exponential growth
logistic growth
Under ideal conditions with unlimited resources, a population will grow __________.
negatively
slowly
logistically
exponentially
This graph is an example of:
J-curve; exponential growth
J-curve; logistic growth
S-curve; exponential growth
S-curve; logistic growth
What most likely will happen with the population size shown in the graph?
The population will continue indefinitely as shown.
The population will still grow, but the rate of growth slows down, so the population size increases more slowly.
The population will instantly decrease at a drastic rate.
There is no way to tell what will happen with this population.
_________________ occurs when a population’s growth slows and then stops, following a period of exponential growth.
Ecological succession
Density and distribution
Exponential growth
Logistic growth
The maximum number of individuals of a particular species that a particular environment can support is:
exponential growth
logistic growth
carrying capacity
density and distribution
