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Biology · Year 11 · Module 4

Ecosystem Dynamics

Interactions between organisms and their environment — nutrient flow, population ecology, species interactions, succession, biodiversity and conservation.

18lessons

3quizzes

6–8hrs study

Start Lesson 1 →

Lessons

Introduction to Ecosystems — Components, Structure and the Web of Life

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Autotrophs, Heterotrophs and Saprotrophs — Roles in Nutrient Cycling

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Food Chains and Food Webs — Modelling Energy and Matter Flow

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Trophic Levels and Energy Transfer — The 10% Rule and Trophic Efficiency

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Ecological Pyramids — Numbers, Biomass and Energy

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Checkpoint Quiz 1 — IQ1: How do organisms obtain nutrients?

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Abiotic Factors — The Physical and Chemical Environment

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Population Growth — Exponential, Logistic and Carrying Capacity

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Interspecific and Intraspecific Competition

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Symbiotic Relationships — Mutualism, Commensalism and Parasitism

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Ecological Sampling — Quadrats, Transects and Mark-Recapture

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Comparing Ecosystems — Abiotic and Biotic Differences

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Abiotic and Biotic Factors Synthesis — Predicting Distribution

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Checkpoint Quiz 2 — IQ2: How does the environment affect distribution and growth?

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Predation and Herbivory — Population Structure and Ecosystem Effects

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Keystone Species, Introduced Species and Ecological Disruption

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Ecological Succession — Primary, Secondary and Climax Communities

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Biodiversity — Measurement, Importance and Ecosystem Stability

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Human Impacts — Habitat Destruction, Fragmentation, Pollution and Introduced Species

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Conservation — Strategies, Ethics and Australian Case Studies

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Checkpoint Quiz 3 — IQ3: What effect can one species have on the ecosystem?

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Module Summary Quiz — Ecosystem Dynamics

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Module Snapshot

18lessons

3checkpoints

90MC questions

6–8hstudy time

Ready to start?

Work through lessons in order — each one builds on the last.

Start Lesson 1 →