Figure 53.7
-What does the graph in Figure 53.7 tell you about the definition 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 diversity.
C)Adding a keystone species to the community will make it more robust.
D)A keystone species added to the community can make it more robust.
E)Removing a keystone species from the community will eventually allow for the invasion of a new species.

Question

Figure 53.7 
-What does the graph in Figure 53.7 tell you about the definition 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 diversity. 
C)Adding a keystone species to the community will make it more robust. 
D)A keystone species added to the community can make it more robust. 
E)Removing a keystone species from the community will eventually allow for the invasion of a new species.

Quizplus · Accepted Answer

The graph shows that when the keystone species (sea stars) are present, the diversity of species in the community remains high. However, when the sea stars are removed, the diversity drastically decreases. This supports the definition of a keystone species as a species whose removal results in a significant impact on the community, causing a decrease in diversity.

Figure 53.7 -What Does the Graph in Figure 53.7 Tell You About