Question

4 below is a graph of the number of caterpillars in the corn field over 30 years. which statement is most likely true? o normal corn, with insecticide, no refuge field. o normal corn, with insecticide, with refuge field. o caterpillar - resistant corn, no pesticide, no refuge field. o caterpillar - resistant corn, no pesticide, with refuge field.

Explanation:

1. Analyze the graph: Initially, the number of caterpillars is low. Then it starts increasing rapidly over time.
2. Consider each option:

• For normal corn with insecticide and no - refuge field, the insecticide should keep caterpillar numbers low. But here they are increasing, so this is unlikely.
• For normal corn with insecticide and a refuge field, the refuge field provides a non - treated area for insects, but the insecticide should still have some control. The rapid increase is not typical.
• For caterpillar - resistant corn, no pesticide, and no refuge field, the resistant corn should keep caterpillar numbers in check. But without a refuge, there is a risk of the caterpillars evolving resistance. This could lead to an increase over time as the caterpillars adapt.
• For caterpillar - resistant corn, no pesticide, and with a refuge field, the refuge field can help slow down the evolution of resistance in the caterpillars. The rapid increase in caterpillar numbers is less likely in this case.

Answer:

Caterpillar - resistant corn, no pesticide, no refuge field.