What is a population?
A group of one species inhabiting the same area.
Several population living in the same area.
All of the living things in the entire world.
What type of population size estimation is shown in the picture?
Mark and Recapture
Plot sampling
Which picture represents random distribution?
A
B
C
Which image represents clumped distribution?
What is the per capita growth rate (r) of a shrew population if the birth rate is .4 and the death rate is .1?
.5
.3
.1
What is the size of a shrew population after one month if the starting shrew population is 300 shrews and the per capita growth (r) is 0.3?
300
390
100
❌ curves, death rate is high early in life. ❌ curves death rate for the population is fairly constant. ❌ curves; death occurs later in life.
When did the shrew population reach carrying capacity?
Around 5 months
Around 11 months
Around 15 months
Which population has the highest percentage of births compared to the rest of their population?
Mexico
United States
Sweden
In the United States are their more women or men above 60?
Women
Men
Density independent limiting factors include forest fires, tornadoes and floods.
Select the following reasons carrying capacity could be reached.
Competition for food
Competition for shelter
Loss of habitat
Increased amount of land
Reduction in competition
Increased food
Bitte warte - es wird geladen…