What is the difference between hybrid f1 seed, open pollinated and heirloom vegetable seed?

Hybrid F1 seed is produced by crossing two different varieties of plants to produce offspring with desirable traits. Open pollinated seeds are produced by allowing plants to self-pollinate or be pollinated through natural means, such as wind or insects. Heirloom seeds are open-pollinated seeds that have been passed down, often for generations, within a family or community. In summary: Hybrid F1 seeds are produced by cross-pollination with specific desired traits. Open-pollinated seeds are naturally pollinated and can be saved to grow the same plant in the next season. Heirloom seeds are open-pollinated and have a history of being passed down, often for generations.