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HOW ARE SEEDS DISPERSED?
By : Ray En, Shaun, Aysha, Sabrina
WATCH THIS VIDEO NOW!!!!! http://youtu.be/zbQ1jWl3AOM
Methods of Dispersal
Wind dispersal Water Dispersal Splitting Animal dispersal
Wind Dispersal
These seeds are very light and many have hairy growths which act like little parachutes.
Literally hundreds of species in many plant families have adopted this remarkable method of dispersal, including a variety of weeds.
Gyrocarpus Alsomitra
macrocarpa
Water Dispersal Plants which grow beside water often
rely on water to transport their seeds for them.
They may produce light seeds which float, or there may be fluff that helps buoyancy
Yellow Water LilyBrooklime
Splitting Some fruits scatter their seeds by
literally exploding.
The pod dries, bursts open and forcibly shoots the seeds for several feet in all directions.
saga rubber
Animal Dispersal Animals often serve as seed carriers.
Seeds (with sticky hairs, bristles, hooks, or barbs) are transported by sticking to the fur of animals.
Birds and other animals eat the fleshy fruits and discard the seeds or they may eat both but the seeds are not digested and are passed out with their droppings, often far away from the parent plant.
beggar~tick mimosa
Thank You For Listening.