The graph shows the yield of coffee plantations located at different distances from a patch of primary forest.
Which one of the following options best explains this pattern?
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Pollination by insects from nearby forests is often crucial for the successful cultivation of crops like coffee.
Seed dispersal by forest-dwelling birds and mammals
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The Correct Option isC
Solution and Explanation
Step 1: Understanding the graph.
The graph shows a negative correlation between the distance of coffee plantations from the primary forest and their yield. This suggests that the coffee plantations closer to the forest are performing better than those farther away. This could be due to interactions with forest-dwelling species that enhance coffee growth.
Step 2: Analysis of options.
- (A) Carbon sequestration: While carbon sequestration may happen in forests, it does not directly explain the variation in coffee yield as shown in the graph.
- (B) Seed predation by forest-dwelling insects: This would likely negatively impact coffee yield, but it would not explain the pattern observed in the graph.
- (C) Pollination by forest-dwelling insects: Forest-dwelling insects such as bees and butterflies are often important pollinators for crops like coffee. The closer the plantation is to the forest, the higher the likelihood of receiving pollination from these insects, thus increasing coffee yield.
- (D) Seed dispersal by forest-dwelling birds and mammals: Seed dispersal would be relevant to plant growth but is unlikely to explain the yield pattern observed in the graph.
Step 3: Conclusion.
The best explanation for the observed pattern is (C) Pollination by forest-dwelling insects, as proximity to the forest likely provides better access to pollinators that enhance coffee yield.
