Science Assessment ~ Topics ~ Interdependence in Ecosystems ~ Misconception IEM030

If the size of one population in a food web is altered, all other populations in the web will be altered in the same way (Griffiths & Grant, 1985).

Items that test for misconception IEM030 in this project (Original Project) and key idea ()
Item ID Number	Item Description	How Often the Misconception was Chosen
IE017005	Changes in a population (introduction of a new organism) may affect populations that are not directly connected by a feeding relationship even if they are several steps away in a food web (woodland ecosystem).	19%
IE034005	Changes in a population (rabbits) may affect populations that are not directly connected by a feeding relationship (crickets) even if they are several steps away and not within the same chain in a food web.	10%
IE028005	Changes in a population may affect populations that are not directly connected by a feeding relationship even if they are several steps away and not within the same chain in a food web (no specific organisms identified).	10%
IE028006	Changes in a population (frogs) may affect populations that are not directly connected by a feeding relationship (mice) even if they are several steps away and not within the same chain in a food web.	5%