Item ID027004: Changes in a population in a food web can affect the populations of both its predator and its prey (no specific organisms identified).

The diagram below shows the feeding relationships between populations of organisms L, M, and N. The arrows point from the organisms being eaten to the organisms that eat them.

Using only the relationships between the organisms shown in the diagram, if most of the Ms are killed, which of the following describes what will happen to the numbers of Ls and Ns?

  1. The number of Ls will increase, and the number of Ns will decrease.
  2. The number of Ls will decrease, and the number of Ns will increase.
  3. The number of Ls will increase, and the number of Ns will stay the same.
  4. The number of Ls will stay the same, and the number of Ns will decrease.
Distribution of Responses
Chart showing distrubtion of responses for Item 027004
Students Responding Correctly
Group Correct Total Percent
Overall 838 1405 60%
Grades
  6–8 409 750 55%
  9–12 427 649 66%
Gender
  Male43067264%
  Female39269956%
Primary Language
  English727119961%
  Other9116854%

View data table