Biology Topic Practice

Levels of Organisation in Ecosystems

Ecologists study how life is organised from individual organisms up to entire ecosystems.

What is the difference between a population and a community?

What is Levels of Organisation in Ecosystems?

"Levels of organisation in ecology represent the biological hierarchy from individual organisms to populations, communities, and whole ecosystems."

Question 1

Which of these is a resource that plants often compete for?

Question 2

In a stable community, the populations of all species remain relatively constant. What is this called?

Question 3

What is meant by interdependence in a community?

Question 4

Which statement accurately describes communities competition at a GCSE level?

Hierarchical Structure

Organism: An individual living thing.

Population: A group of individuals of the same species living in a habitat.

Community: All the populations of different species living together in a habitat.

Exam Tip

An ecosystem is the interaction of a community of living organisms with the non-living parts of their environment.

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