Populations

Question 1

Population

Answer 1

A group of organisms of the same species living in the same area at the same time

Question 2

Community

Answer 2

All of the populations of different species in an ecosystem

Question 3

Ecosystem

Answer 3

A unit containing the community of organisms and their environment interacting together e.g. a decomposing log or a lake

Question 4

Sigmoid curve - Lag phase

Answer 4

Organisms establish themselves and settle in

Question 5

Sigmoid curve - log/ exponential phase

Answer 5

Organisms grow rapidly in numbers

Plenty of resources
No limiting factors
Birth rate is higher than death rate

Question 6

Sigmoid curve - stationary phase

Answer 6

Competition for resources is high

Disease spreads

Habitat reaches is carrying capacity

More most populations this is the final stage as population plateaus

Question 7

Sigmoid curve - death phase

Answer 7

Death rate is higher than birth rate

Population size rapidly falls