How do seeds get dispersed?
Seed can be dispersed
in various manners;
this is normally
dependant on the
characteristics of the
seed or seed coat or
the fruit containing the
Flowering plants have different
adaptations to enable their seeds to be
dispersed as far away as possible.
The different methods of seed dispersal
by splitting open forcefully
in edible fruit
eat the fruit and
excrete them in
Examples : tomato, mango, berries etc.
Dispersal by animals
Certain seeds have
burrs, hooks or thorns,
the aim of these is to
attach themselves to
the skin or fur of a
passing or foraging
animals (or clothes in
the case of humans);
the animal then moves
to another location
where hopefully the
seed drops and
Examples : Burdock and Foxtail.
hooks stiff hairs
does it disperse?
plants that grow
close to the coast or
rivers are adapted
to float in order to
be distributed away
from the parent.
Most water plants
employ this method
Examples : Coconuts, mangrove plants and Lotus
Some plants have
throw the seed
away from the
Examples : Impatiens/ Balsam and some legumes.
Dispersal by splitting
dry and hard fruit wall
At a glance…
Adaptations for reproduction
by wind by water by splitting openby animals
• dry and hard fruit wall
1.To move plants to new locations.
2.Reduces overpopulation and competition for
resources in the same location.
3.Extends the physical range of the plants into new
• Many seeds are edible and the majority of food
comes from seeds, especially from cereals, pulses
• Seeds also provide most cooking oils, many
beverages and spices.
• Seeds are also eaten by animals, and are fed to
cattle. Many seeds are used as birdseed.
• Pitcher Plant is plant that hunts and even
eats frogs, insects, move etc.
• It has a pitcher like structure and mouth is
covered by a leaf. It has a smell which
attracts insects to it. When insects lands on
its mouth it gets trapped and can’t get out.