Use the graph to answer the following question.

What does the graph tell you about the effect of a keystone species?
A) A keystone species has little interaction with other species in an environment.
B) Removing a keystone species from the community drastically reduces species richness.
C) Adding a keystone species to the community will make it more diverse.
D) Removing a keystone species from the community will eventually allow for the invasion of a new species.

Question

Use the graph to answer the following question.

What does the graph tell you about the effect of a keystone species?
A) A keystone species has little interaction with other species in an environment. 
B) Removing a keystone species from the community drastically reduces species richness. 
C) Adding a keystone species to the community will make it more diverse. 
D) Removing a keystone species from the community will eventually allow for the invasion of a new species.

Quizplus · Accepted Answer

The graph shows the relationship between species richness and the presence of a keystone species. When the keystone species is present, there is a higher species richness. However, when the keystone species is removed, there is a drastic reduction in species richness. Therefore, the graph tells us that removing a keystone species from the community drastically reduces species richness.

Use the Graph to Answer the Following Question