Bio Section 5-2 Limits to Growth
What are four density-dependent limiting factors?
Competition,predation,parasitism, disease
A limiting factor that affects all populations in similar ways regardless of population size is called a ______________________.
Density- Independent limiting factor.
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.
What is a limiting factor?
It is a factor that causes population growth to decrease
What is a density-dependent limiting factor?
It is a limiting factor that depends on population size.
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 nutrient is an example of what?
Limiting Factor
What are examples of density independent limiting factors?
Natural disasters, cutting rainforest.
The mechanism of population control in which a population is regulated by predation is called ___________?
Predator-prey relationship
What is the characteristic response in the population size of many species to a density-independent limiting factor?
The population size characteristically crashes.
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
When populations become crowded what do organisms compete with one another for?
They compete for food water space some other essentials of life?
When do density dependent factors operate most strongly?
They operate most strongly when a population is large and dense.
True or false most population can adapt to a certain amount of change
True
True or false periodic drought can affect entire populations of grasses.
True
True/false populations never build up again after a crash in population size.
false
When do density dependent factors become limiting?
they become limiting only when the population density reaches a certain level.
True or false major upsets in an economy can lead to long-term declines in certain populations.
true
