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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

In a food pyramid, how much energy is lost at each tropic level? 

90% is lost, only 10% is passed to the next level

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

Tertiary Consumers -- ? 

Secondary Consumers -- ? 

Primary Consumers -- 250,000 kJ

Primary Producers -- ?

Tertiary Consumers -- 2,500 kJ

Secondary Consumers 25,000 kJ

Primary Consumers -- 250,000 kJ

Primary Producers -- 2,500,000 kJ

400

What is the difference between a community and an ecosystem? 

Ecosystem includes abiotic factors 

400

What are the three parts of the biosphere?

Lithosphere, Hydrosphere, Atmosphere 

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 pattern of spacing of a population within an area
What is dispersion
500

Suppose in a population of 1000 wild horses, there are 400 births and 220 deaths. Also, 180 new horses join the population from an area that was destroyed by fire, and 380 horses are captured by park rangers. Mathematically describe the overall change in this horse population.

Because a total of 580 horses are added and a total of 600 horses are lost, the population decreases by 20 individuals. Mathematically, the population decreased by 20/1000 or 2%.

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