4.7.2 Organisation of an ecosystem (will come up) P2 Flashcards
Define population
A species that occupy the same habitat
Define habitat
The place in which an organism lives
Define community
Populations of different species interacting
Define ecosystem
The interactions between the biotic and abiotic factors in an area
What do food chains show
The feeding relationship of different organisms and the flow of energy between the organisms
Define biomass
The total mass of living material
What are trophic levels
The stages in a food chain
What do arrows in a food chain represent
The direction of biomass transfer
Describe a simple food chain
Producer –> primary producer –> secondary consumer –> tertiary consumer
What is a producer
An organism that makes its own food
What types of organisms are producers
Photosynthetic organisms like green plants and algae that trap energy from the sun
What is a primary consumer
An organism that feeds on producers
What is a secondary consumer
An organism that feeds on primary consumers
What is a tertiary consumer
An organism that feeds on secondary consumers
What is a predator
A consumer that kills and eats other animals
