Population

Definition

Population is a group of individuals of the same species living in a specific geographic area. It is a fundamental unit of study in ecology and evolutionary biology.

5 Must Know Facts For Your Next Test

1. Population size can be influenced by birth rates, death rates, immigration, and emigration.
2. Population density refers to the number of individuals per unit area or volume.
3. Population dynamics studies how populations change over time due to births, deaths, and migration.
4. Carrying capacity is the maximum population size that an environment can sustain indefinitely.
5. Age structure within a population affects its growth rate and stability.

Review Questions

• What factors influence population size?
• Define population density and explain its significance.
• How does age structure impact population growth?

Related terms

Community: A group of different species living together in one area and interacting with each other.

Ecosystem: A biological community of interacting organisms and their physical environment.

Carrying Capacity:

The maximum number of individuals in a population that an environment can support sustainably.