gen-define-the-role-of-pollinators-in-yield-and-give-one-short-w-a8c4

Define the role of pollinators in yield and give one short worked example.

# Role of Pollinators in Yield **Pollinators increase crop yield by facilitating fertilization in flowering plants.** When pollinators (bees, butterflies, birds, etc.) transfer pollen from anthers to stigmas, they enable: 1. **Fruit/seed set** - More flowers successfully develop into fruits 2. **Fruit quality** - Better pollination often produces larger, more uniform fruits 3. **Seed viability** - Improved genetic diversity and seed development ## Worked Example: Apple Orchard **Scenario:** A 1-hectare apple orchard with and without bee pollination **Without adequate pollinators:** - Fruit set: 5% of flowers develop into apples - 100 trees × 1,000 flowers/tree × 0.05 = 5,000 apples - Average weight: 120g (smaller, misshapen) - **Yield: 600 kg/hectare** **With adequate pollinators:** - Fruit set: 25% of flowers develop into apples - 100 trees × 1,000 flowers/tree × 0.25 = 25,000 apples - Average weight: 180g (larger, well-formed) - **Yield: 4,500 kg/hectare** **Result:** Pollinators increase yield by **650%** (from 600 to 4,500 kg/ha), demonstrating their critical economic importance to agriculture.