Question

The changes in two populations of herbivores in a grassy field is shown by graph . What is the reason for these changes?

• A. All of the plant populations in this habitat decreased
• B. Population B competed more successfully for food than did population A
• C. Population A produced more offspring than population B did
• D. Population A consumed the members of population B
• E. Over time, both populations will have the same average number

Answer 1

The correct option is B Population B competed more successfully for food than did population A

The graph shows two populations - A and B. Population of B has increased while population of A has decreased. Both are herbivores and competes for the same food that is grass, however population B was better adapted in comparison to A and therefore competed more successfully for food than population A. Hence, the correct answer is option B.