Vocabulary
Population Density & Distribution
Human Populations
Limiting Factors
MISCELLANEOUS
100
What is the area inhabited by a population?
Geographic Range
100
What is population density?
the number of individuals in a given area
100
what is demography?
Study of Human populations
100
List 3 examples of what organisms compete for.
food, water, sunlight, shelter, mates, etc
100
The movement of organisms into a range is called:
immigration
200
How individuals are spaced out across the range of the population.
population distribution
200
Fewer individuals in a population reduces what limiting factor?
competition
200
Draw an exponential graph
j curve
200
What is an example of density independent limiting factors?
natural disasters
200
If emigration & immigration numbers remain equal, what could cause a slowed growth rate?
decreased birth rate
300
Define age structure
Number of males and females of each age a population contains
300
DOUBLE JEOPARDY
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If there were a sudden food shortage, how would a population's birth rate, death rate, emigration and immigration rates be affected?
300
Why is it important to study age structures of populations?
Helps scientists predict a population’s potential to increase in size
Fewer females than males mean lower rate of reproduction
300
For density dependent L.F. finish this sentence:
The larger the population size, the _________ this factor becomes.
more limiting
300
Water lillies do not grow in desert sand because water availability to these plants in a desert is:
a limiting factor
400
Limiting factors determine what?
the carrying capacity of an environment for a species
400
Draw what uniform distribution looks like in a population.
evenly spaced out
400
Who suggested that only war, famine and disease could limit human population growth.
Thomas Malthus
400
____________ leads to lower birth rates, higher death rates, and higher emigration rates
stress from overcrowding
400
DOUBLE JEOPARDY
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There are 200 births, 100 deaths, and 0 people have emigrated/ immigrated into a population. Overall the population size has:
500
DOUBLE JEOPARDY
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Draw AND label the 3 types of population distribution.
500
If a population density becomes too crowded, what is most likely to happen?
increased death rate
500
What 4 factors effect population size?
birth & death rate
emigration & immigration
500
describe the difference between density dependent and independent limiting factors
independent: Population size does not matter – these factors will limit the WHOLE population if they occur
500
In a logistic growth curve, exponential growth is the phase in which the population
grows quickly