Levels of Organization and Trophic Relationships

Understand that photosynthetic organisms serve as the primary producers of all biomass for life on Earth.

Describe how feeding relationships within a community are accurately represented by food chains, always beginning with a producer that synthesises molecules.

Explain that producers are typically green plants or algae that manufacture glucose through the process of photosynthesis.

Understand how ecologists utilise experimental methods, specifically transects and quadrats, to determine the precise distribution and abundance of species in an ecosystem.

Understand the mathematical terms mean, mode, and median in the context of analysing the abundance of organisms.

Calculate arithmetic means from ecological sampling data.

Plot and draw appropriate graphs by selecting appropriate scales for the axes based on biological data.

Explain the flow of energy from producers to primary consumers, followed by secondary and tertiary consumers.

Describe predators as consumers that actively kill and eat other animals, and identify the eaten animals as prey.

Understand that in a stable community, the numbers of predators and prey will rise and fall in predictable cycles.

Interpret graphs designed to mathematically model these predator-prey population cycles.

Evaluate methods for measuring the population size of a common species in a natural habitat.

Assess the effect of an environmental factor on the distribution of a species using appropriate sampling techniques.