passive dispersal

Passive dispersal in zoology refers to the scattering of organisms through external forces rather than their own movement. This can occur via wind, water, or other creatures. For example, spiders and insects have been found thousands of miles from land, carried by airplanes. Plants spread their seeds and spores through wind and water, often with adaptations to enhance their range. Animals also aid in seed dispersal, either through undigested matter in their excrement or by seeds attaching to their bodies. Parasites can also use hosts or other animals as dispersal mechanisms. This passive method is crucial for the spread of many species, complementing active dispersal strategies.1