Seed Dispersal

yuchen0628 13,245 views 8 slides Dec 15, 2009
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About This Presentation

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Slide Content

Seed Dispersal
The four types!
Water, animal, explosion and wind!

Why to seed need to be
dispersed?
If seeds are not dispersed, it will just drop
just next to it’s mother plant. This will end
with a conclusion that the seed might not
have the right amount of water, light and
temperature to survive or even grow!

Dispersed by wind
Seeds that are dispersed by wind have to be
very light and probably have feathers. Like a
dandelion.

Dispersed by water
Seeds dispersed by water will probably be
covered by fruit. I probably will be growing
by the beach, lake or a river. A coconut is a
good example, it grows by the beach.

Dispersed by explosion
Seeds that are dispersed by explosion like
sweet beans have unique ways to disperse
their seeds. These kinds of plants ‘shoot’
seeds out of pods. The seeds can travel
quite a few feet from the plant.
It’s not this kind of explosion!

Seeds dispersed by animals 1
Animals disperse seeds in 3 ways. First,
some plants, like burrs have barbs or other
structures that get tangled in animal fur or
feathers, and are then carried to new places.

Seeds dispersed by animals 2
 Other pl ants produce thei r seeds
i nsi de
fl eshy frui ts that hopeful l y gets
eaten be an
ani mal , l i ke bi rds. The frui t i s
di gested by
the ani mal , but the seeds pass
through the
di gesti ve tract, and are dropped
i n other
l ocati ons.

Seeds dispersed by animals 3
Some animals bury seeds, like squirrels
burying acorns, to save for later, but may
not return to get the seed. The seed can
grow into new plants
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