Question

The table shows the relative abundance of three potential prey species in the environment and in the diet of a bat predator.

• A. The predator shows a preference for prey species Z.
• B. The predator shows no preference for any of the three prey species.
• C. Species X is avoided by the predator.
• D. The predator shows a preference for prey species Y.

Hint:

Comparing the relative abundance of prey species in the diet of a predator with their relative abundance in the environment can reveal the predator's preference for or avoidance of certain species.

Answer 1

The Correct Option is A, C

Step 1: Analyzing the data.
The table provides information about the relative abundance of three prey species (X, Y, and Z) in the diet of a bat predator, as well as their relative abundance in the environment. The key to understanding predator preferences is to compare the proportion of each species in the predator's diet with its relative abundance in the environment. - Species X: Its relative abundance in the environment is 40%, but it is completely absent from the predator's diet (0% in diet). This suggests that the predator avoids species X. - Species Y: Its relative abundance in the environment is 40%, and it makes up 30% of the predator's diet. This suggests that species Y is consumed by the predator in proportion to its abundance in the environment, indicating no strong preference or avoidance. - Species Z: Its relative abundance in the environment is 20%, yet it makes up 70% of the predator's diet. This suggests that the predator shows a strong preference for species Z, as it is being consumed at a much higher rate than expected based on its abundance in the environment.
Step 2: Interpreting the options.
- (A) The predator shows a preference for prey species Z: Correct, as species Z is consumed at a much higher rate (70% in the diet compared to 20% in the environment). This suggests the predator strongly favors species Z.
- (B) The predator shows no preference for any of the three prey species: This is incorrect because species Z is overrepresented in the diet, indicating a preference for it.
- (C) Species X is avoided by the predator: Correct, as species X is not consumed at all, despite its 40% abundance in the environment.
- (D) The predator shows a preference for prey species Y: This is not correct because species Y's relative abundance in the diet is proportionate to its abundance in the environment.

Step 3: Conclusion.
Based on the data, the predator shows a preference for species Z and avoids species X. Therefore, the correct answer is (A) and (C).