Figure 53.4
-What conclusion can you draw from the figure above?
A)Without direct contact,mussels can sense the presence of crabs.
B)Mussels can sense the presence of crabs only visually.
C)Mussels are increasing their shell thickness in response to water current.
D)Shell thickness is a non-inducible defense.

Question

Figure 53.4 
-What conclusion can you draw from the figure above?
A)Without direct contact,mussels can sense the presence of crabs. 
B)Mussels can sense the presence of crabs only visually. 
C)Mussels are increasing their shell thickness in response to water current. 
D)Shell thickness is a non-inducible defense.

Quizplus · Accepted Answer

The figure shows that mussels exposed to water containing cues from crabs increased their shell thickness, indicating that they can sense the presence of crabs without direct contact. This suggests that mussels have a way of detecting chemical signals released by crabs, either through their sense of smell or touch.

Figure 53.4 -What Conclusion Can You Draw from the Figure Above