Vanderbilt University provides pictures and brief explanations of fruit and seed dispersal methods.
The Seed Site briefly goes over the conditions a seed needs to be successful, then talks about how seeds are spread. Pictures below the written statement link you to explanations of different seed dispersal methods.
The video and companion guide discuss what all plants need: water, sun and space. In order for plants to move to new locations and resources, they have adapted to disperse their seeds.