Misconception IEM065:

Varying the size of a population of organisms will affect only those populations of organisms that are directly connected to it in a feeding relationship, not organisms that are one or more steps removed/away from it (Griffiths & Grant, 1985; Webb & Boltt, 1990).

Items that test for misconception IEM065
Item ID
Number

Item Description

How Often the Misconception was Chosen

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IE025004

Changes in a population 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).

37%

IE016008

Changes in a population (introduction of a new species) may affect populations that are not directly connected by a feeding relationship (caterpillars) even if they are several steps away in a food web.

37%

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.

33%

IE019015

Changes in a population (fish in a pond) may affect populations that are not directly connected by a feeding relationship (insects) even if they are several steps away in a food web.

31%

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).

28%

IE019014

Changes in a population may affect populations that are not directly connected by a feeding relationship even if they are several steps away in a food web (pond ecosystem).

24%

IE012011

Changes in a population in a food web (wolves) can affect populations of other organisms (grass) even if they are not directly connected in a feeding relationship.

20%

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.

20%

IE020004

Changes in a population (fish in a pond) may affect populations that are not directly connected in a feeding relationship (large birds).

19%

IE012012

Changes in a population in a food web (wolves) can affect populations of other organisms (grass) even if they are not directly connected in a feeding relationship (text only, no diagram).

16%

IE026004

Changes in a population may affect populations that are not directly connected by a feeding relationship even if they are several steps away in a food web (ocean ecosystem).

14%

IE032004

Changes in a population in a food web can affect populations of other organisms even if they are not directly connected in a feeding relationship (no specific organisms identified).

13%

IE026005

Changes in a population may affect populations that are not directly connected by a feeding relationship even if they are several steps away in a food web (no specific organisms indicated).

13%

IE032005

Changes in the number of worms in an area can affect the number of foxes in that area even though foxes do not depend directly on worms for food.

10%

IE031007

Changes in a population of organisms in a food web (worms) can affect other populations of organisms (foxes) even if they are not directly connected in a feeding relationship.

7%

IE031006

Changes in a population in a food web can affect other populations of organisms even if they are not directly connected in a feeding relationship (no specific organisms identified).

7%