There are 3 main methods of seed dispersal.
A huge explosion (explosive) caused by the animals terrible wind dispersed the seeds.
Animal dispersal can be further divided into internal animal dispersal and external animal dispersal.
External animal dispersal
Seeds that are dispersed externally by animals use hooks or spines to cling onto the fur of animals as they brush past the plant. These then drop off later after the animal has moved on. Examples include burdock.
Internal animal dispersal
Seeds that are dispersed internally by animals use a fruit to entice the animal to eat the seeds. The seed coat protects the seed as it passes through the digestive system before being excreted by the animal. Examples include strawberries.
Seeds that are dispersed by the wind can take several forms. Common examples are dandelion seeds and sycamore seeds.
When ripe the seed pods of Himalayan balsam and exploding cucumbers will explode when they are touched, ejecting the seeds away from the parent plant.