The significance of symbiotic relationships in ecosystems lies in their ability to enhance biodiversity and improve the stability of ecological communities. These interactions, which include mutualism, commensalism, and parasitism, allow species to share resources and support each other's survival. For instance, in mutualistic relationships, both organisms benefit, such as bees pollinating flowers while obtaining nectar. This interdependence leads to improved adaptability and resilience of species, fostering healthier ecosystems that can better withstand environmental changes.