HOW ARE SEEDS DISPERSED? By : Ray En, Shaun, Aysha, Sabrina

HOW ARE SEEDS DISPERSED?

By : Ray En, Shaun, Aysha, Sabrina

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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

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