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Vocabulary
Population Characteristics
Limiting Factors
Growth Rates
Population Ecology
100
The number of organisms per unit area
What is population density
100
_______________ is a group of the same species in the same place at the same time.
What is population
100
Limiting factors can be abiotic or biotic. True or False
True
100
Japan had a birthrate of eight and a deathrate of nine in 2008. What was the PGR?
-1 %
100
The study of ________________ helps to predict changes in human population
What is demographics (demography)
200
any factor in the environment that does not depend on the number of members in a population per unit area
What is density independent factors
200
What are the three types of plant and animal dispersion?
What is clumped, random, and uniform
200
Give an example of a density independent factor.
What is any natural disaster or weather event.
200

How has the rate of human population growth changed in the last 50 years

The rate of its growth has slowed

200
Exponential growth in human population is due to
technology advances
300
the number of individuals moving away from a population
What is emmigration
300
Which event is correlated with the beginning of exponential growth in human population? a. the start of the Industrial Revolution b. the invention of agriculture c. the bubonic plague epidemic d. the end of the Second World War
What is a. the start of the Industrial Revolution
300
Give an example of density dependent factor
parasites, predation, competition etc
300
To assess a population’s growth rate, an ecologist must know how many individuals are born, how many died, and how many move away in a given period of time. What else must an ecologist know? a. how many individuals find mates b. how many individuals move in from somewhere else c. how many individuals carry communicable diseases d. how many individuals are young or old
b. how many individuals move in from somewhere else
300

A graph/chart which shows the number of males and females in each of three age groups.

What is an age structure diagram?

400

This type of organism has a short lifespan and produces many offspring at a time

What is an r-strategist?

400

the pattern of spacing of a population within an area

What is dispersion?

400
Which of the following statements is correct? a. Population size of predators increases when their prey is scarce. b. Competition for resources is density-independent when food is plentiful. c. Disease is density-dependent because transmission occurs more easily when a population is large. d. A change in average temperature is a density-dependent factor because fewer organisms can acclimate to variations in temperature.
c. Disease is density-dependent because transmission occurs more easily when a population is large.
400
Young adult male chimpanzees look for mates outside their own population. The males then take the females back to their group. Which of the following occurs in females’ original population? a. emigration c. mortality b. immigration d. natality
a. emigration
400
The three major causes of human deaths throughout recorded history are war, famine, and _____________
What is disease
500

The maximum number of individuals in a species that an environment can support for the long term

What is the carrying capacity?

500

This type of country is more likely to have an age structure diagram with a wide base (i.e. pre-reproductive age), and narrow top.

What is a developing country?

500
Which limiting factor is dependent on the density of the population? a. contagious fatal virus b. dumping toxic waste in a river c. heavy rains and floods d. widespread forest fires
What is a. contagious fatal virus
500
How does the logistic model of population growth differ from the exponential model? a. The exponential model shows a restricted growth rate. b. The logistic model considers the environment’s carrying capacity. c. The graph of the exponential model is S shaped. d. The graph of the logistic model has a longer lag phase.
b. The logistic model considers the environment’s carrying capacity.
500
Define zero population growth
when birth rate equals death rate and immigration rate equals emmigration rate