Seed dispersal is crucial in ecosystems as it plays a major role in ensuring biodiversity and the survival of plant species. By spreading seeds to different locations, seed dispersal helps plants colonize new habitats, escape competition for resources, and adapt to changing environmental conditions. It also promotes genetic diversity within plant populations, which is essential for the long-term health and resilience of ecosystems. Additionally, seed dispersal contributes to the overall functioning of ecosystems by supporting food webs, nutrient cycling, and ecosystem stability.