Vocabulary
Things such as light, water, nutrients, minerals and oxygen that can affect a populations ability to grow.
Limiting Factor
Growth of a population in which the rate becomes ever more rapid in proportion to the growing total number or size. (Hint: Growth in a population with unlimited resources and perfect conditions).
Exponential Growth
Organisms that do not seem to have a specific arrangement in their population demonstrate this type of dispersion.
random dispersion
The unit that should be placed on the X axis when plotting a population graph.
Time
Name 2 things of the 4 that affect population growth.
birth rate, death rate, immigration, emigration
The movement of organisms out of an area or population.
Emigration
The pattern of distribution of organisms within a habitat.
Dispersion
Two factors that might cause a population to reach carrying capacity in an ecosystem.
Answers will vary (Examples include: food, water, ecological conditions, space, shelter)
The unit that should be plotted on the Y axis when you are plotting a population graph.
Population/Population Size/Number of Individuals
Things such as weather, natural disasters, pollution, sudden climate change that can affect populations.
density independent limiting factors
The maximum number of individuals an environment can support.
Carrying Capacity
The three specific patterns of dispersion we learned in class.
clumped, random and uniform
Organisms like zebras run in herds to avoid predators, this is a pattern called:
clumped dispersion.
The type of population dispersion that most flowers and plants adhere to.
Random dispersion
The movement of organisms into an environment or area.
immigration
The number of organisms per unit of area.
Population Density.
Type of growth where the growth rate decreases as the population reaches carrying capacity.
Logistic Growth
Type of dispersion demonstrated by humans.
Clumped dispersion
The type of population dispersion that gulls adhere to.
Uniform dispersion
Ticks and fleas are species that will feed on the blood of dogs or cats. Dogs and cats may be harmed as they may become sick from the bites. What symbiotic relationship best describes the relationship between these species?
Parasitism
Interaction between two different organisms living in close physical association. (Hint: May be advantageous, harmful, or a neutral interaction for either organism).
Symbiosis
Population Density of a herd of deer that includes 50 individuals in a 2km2 area.
25 deer per km
The type of dispersion that is best for protection, hunting, and/or surrounding a resource.
Clumped Dispersion
A scientist is studying a population of sharks in the Pacific Ocean. The scientist reports that compared to a few years ago, the sharks are spending less time in equatorial waters and more time in waters near California and Alaska. Which factor of the shark's population is changing?
Geographic Range
Large predators, like lions and and leopards, may compete for the same prey species, limiting each other's ability to survive and reproduce. Which type of symbiotic relationship is this?
Competition