Seed Dispersal

Wind dispersal

Seed dispersal is the movement of a seed to a new area by the means of an animal, water, of wind.  Because plants cannot physically move the seeds themselves, they depend on these forces to move seeds for them. The dandelion in the picture is a classic example of a plant that uses wind for dispersal. Dandelion seeds have a pappus that act as a sort of a parachute, allowing the seeds to travel a greater distance. A major disadvantage of wind dispersal is the lack of control over where the new location of the seed will be.  If the seed lands in an area without soil, it will die.  Because of this, plants that use wind as a dispersal method must produce a large amount of seed to increase the probability of survival.


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