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Bio Section 5-2 Limits to Growth
Terms in this set (18)
What is a limiting factor?
It is a factor that causes population growth to decrease
A limiting nutrient is an example of what?
What is a density-dependent limiting factor?
It is a limiting factor that depends on population size.
When do density dependent factors become limiting?
they become limiting only when the population density reaches a certain level.
When do density dependent factors operate most strongly?
They operate most strongly when a population is large and dense.
What are four density-dependent limiting factors?
When populations become crowded what do organisms compete with one another for?
They compete for food water space some other essentials of life?
The mechanism of population control in which a population is regulated by predation is called ___________?
What are the prey and what are the Predators in the predator prey relation on Isle Royale?
The prey are moose and the predators are the wolves
Why does the wolf population on Isle Royale decline following a decline in the moose population.
It declined because the wolves eat all the moose and then there are no more moves to eat to the Wolves die.
How are parasites like predators?
Like predators parasites nourishment at the expense of their hosts and weakening them and causing disease or death
A limiting factor that affects all populations in similar ways regardless of population size is called a ______________________.
Density- Independent limiting factor.
What are examples of density independent limiting factors?
Natural disasters, cutting rainforest.
True or false most population can adapt to a certain amount of change
True or false periodic drought can affect entire populations of grasses.
True/false populations never build up again after a crash in population size.
True or false major upsets in an economy can lead to long-term declines in certain populations.
What is the characteristic response in the population size of many species to a density-independent limiting factor?
The population size characteristically crashes.
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