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Levels of ecological organisation

Levels of ecological organisation

An individual organism is one living organism. For example, one oak tree is an individual organism. A population contains all the organisms of one species living in the same area at the same time, such as all the oak trees in a woodland.

9.1 Ecosystems and interdependence Lesson

  1. GCSE
  2. /Biology
  3. /9.1 Ecosystems and interdependence

Step-by-step lessons on Edexcel GCSE Biology 9.1 Ecosystems and interdependence, covering 9.1.1 Levels of organisation in ecosystems, 9.1.2 Abiotic and biotic factors, 9.1.3 Importance of interdependence, 9.1.4 Parasitism and mutualism, and 9.1.5 Determining number of organisms in an area. Each one builds up to exam-style questions. Start with the foundational topics and build up to the higher-tier material.

Lessons