Ecology Relationships Among Organisms Topic 4

Nutritional Relationships

Nutritional Relationships Transfer of nutrients between organisms

Autotrophs = Producers Make their own food Synthesize organic molecules from inorganic raw materials

Heterotrophs = Consumers Do not make own food Depend on other organisms for food

Herbivores Eat producers

Omnivores Eat both plants and animals

Carnivores Animals which eat other animals

Decomposers Organisms which feed by breaking down organic matter from dead organisms

Food Chain What eats what

Food Web Interconnected group of food chains

Trophic Levels One step in a food pyramid

Tertiary Consumers Secondary Consumers Primary Consumers Producers

Pyramid of Energy Energy is LOST between trophic levels More energy in producers Less energy in consumers

Pyramid of Biomass Biomass- amount of organic matter More producers than consumers

Pyramid of Biomass