• Seeds spread through wind and other natural functions.dandelion seed head 1 image by Lanius from Fotolia.com
  
  A seed has a protective coating and nutrients for a plant embryo to consume while it is inside the shell. Some plants, such as mold, produce using only spores. This process is different because a spore does not have a protective coating or nutrients for the plant embryo. Flowers produce everything they need to propagate including pollen and seeds.
  
  

Vegetables

• Many vegetables reproduce through seeds. All seeds are located within the fruit of the plant. You can save and dry the seeds inside a vegetable and then plant them in the spring. Popular vegetables from which to save seeds include tomatoes, peppers, peas and beans, according to the University of Minnesota. Some vegetables like potatoes propagate asexually and do not reproduce with seeds.
  
  

Flowers

• All flowering plants are propagated through seeds. This makes up about 90 percent of the plants on earth and includes all types of flowers, according to Clinton Community College. The actual flower on a plant, such as a lily, is the plants' reproductive structure. Each flower has a pistil and filaments, which protrude from the center of the bloom. The pistil contains the plants' ovaries in which seeds develop. Hairs on bees catch pollen as the bees land on the petals of the bright flowers. During this process, some of the pollen transfers from filament to stamen and fertilizes the seed.
  
  

Conifers

• Conifers are plants whose fruit is a cone rather than a flower. Pinecones are well known versions of these hard, spiky seed bearers, but trees that produce cones include pines, firs, spruce, cedars and redwoods. The cone contains the conifers seeds. The pollen of a conifer is separate from the cone and occurs in small microsporangia. These structures look like tiny pinecones, but fall apart when squeezed between fingers.
  
  

Fruit

• Like vegetables, the fruits we eat also contain seeds. One of the best examples of this is a watermelon. When you cut one open, you can clearly see the black seeds contained within the fruit. Oftentimes the fruit encourages animals to eat it, which helps to spread the seeds. In the wild, the fruit would serve as further nutrients as the seed sprouted and grew.