The following diagram shows three islands. Islands A and B were connected in the past, C was always separate. A species of land snail is found on all three islands. Which of the following does not correctly describe the distribution of this snail relative to the three islands?
A) Vicariant distribution relative to A and B
B) Dispersal distribution relative to A and C
C) Dispersal distribution relative to B and C
D) Vicariant distribution relative to A and C
E) All of the above are correct.

Question

The following diagram shows three islands. Islands A and B were connected in the past, C was always separate. A species of land snail is found on all three islands. Which of the following does not correctly describe the distribution of this snail relative to the three islands? 
A) Vicariant distribution relative to A and B 
B) Dispersal distribution relative to A and C 
C) Dispersal distribution relative to B and C 
D) Vicariant distribution relative to A and C 
E) All of the above are correct.

Quizplus · Accepted Answer

The Answer of The following diagram shows three islands. Islands A and B were connected in the past, C was always separate. A species of land snail is found on all three islands. Which of the following does not correctly describe the distribution of this snail relative to the three islands? 
A) Vicariant distribution relative to A and B 
B) Dispersal distribution relative to A and C 
C) Dispersal distribution relative to B and C 
D) Vicariant distribution relative to A and C 
E) All of the above are correct.

The Following Diagram Shows Three Islands