✈Dispersal by Wind:Seeds of some plants are light-weight and some hair-like or wing-like structures are present on them. Such seeds float on air and are thus dispersed by wind. Example: Dandelion, maple, drumstick, etc.✈Dispersal by Water:Dispersal by water takes place in some aquatic plants and in some which grow NEAR a water body. Seeds of water lily float and thus dispersed by water. The coconut seed has a tough fibrous covering which has plenty of air inside. This HELPS the coconut seeds in floating on water.✈Dispersal by Animals:Some seeds have spine-like structures on them. They get stuck to the fur of animals and thus get spread to different places. Examples; Beggar tick, Xanthium, etc. Some seeds are swallowed by BIRDS and animals along with FRUITS. These seeds get dispersed with bird or animal droppings.✈Dispersal by Bursting: Some fruits burst open when they mature. The force of bursting is enough to spread the seeds. Examples; Ladyfinger, castor, balsam, etc.✈Dispersal by Humans:Human beings ALSO help in dispersal of seeds, especially during farming.