Show:
Vocabulary
Population Characteristics
Limiting Factors
Growth Rates
Population Ecology
100

The number of organisms per unit area

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

What is growth rate?

The change in a population over time

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 are called...

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
BUSTED!!!!
The team that chose this square losing 100 points
200
Exponential growth in human population is due to
technology advances
300

What are type II survivorship curves?

Constant survivorship over the lifespan

300

In an ideal, unlimited environment, a population's growth follows a _______ model 

Exponential

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
BUSTED
The team that chose this square loses 100 points.
400

Type I survivorship curves are typical of species that exhibit...

Few offspring and good parental care

400
This type of growth decreases as the population size approaches carrying capacity

Logistic

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

Deer feed on all sorts of plants, trees, shrubs, flowers, and grass, and require large quantities of such vegetation to sustain themselves. Eventually, deer began to starve because their large numbers depleted their main source of food; they had reached their ______ _______. 

Carrying capacity

500

What is a biological control agent?

Something that controls the growth of a weed or pest

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