Transcript Seeds Powerpoint

Some plants reproduce by creating fruit and seeds.
The seeds are contained within or on the fruit.
There are lots of different types of fruit.
A seed has three parts:
1. Embryo – baby plant with roots,
stems and leaves
2. Seed Coat – for protection
3. Stored food
Cotyledons are the leaves of the seeds.
This is where food is stored.
When a seed has been dispersed, only a few of those the plant creates
land where they can form a new plant.
The seeds that land in a good place can begin to grow.
This process is called germination.
1.The seed absorbs water.
2.The embryo grows and pushes out of the seed.
3. The embryo uses stored food to grow.
4. The roots grow down and the stem and leaves grow upwards,
Once a seed has grown fully it is ready to begin to
make a new plant.
Plants create lots of seeds because many get eaten,
damaged or do not find a good place to grow.
The seed has more chance of becoming a new plant
if it can start to grow away from its parent plant.
This is because it will need light, water and nutrients
which are harder to get underneath the parent plant.
Seeds can be dispersed in different ways.
Seeds are packaged within tasty
fruit.
Animals and birds eat them.
They are deposited in their
droppings.
The droppings act as a special
fertiliser to help the young plant
grow.
Seeds can use the wind to leave
home.
Some seeds are light and have
tiny parachutes.
Some are shaped like wings to
spin away like a helicopter.
Some seeds use hooks to grab a
ride on passing animals.
The animals carry them away
from the parent plant.
After a while the seed falls off
and can begin to grow.
Some seeds are spread by the
seed pod splitting open violently.
The seeds are thrown in all
directions.
Many seeds are thrown away
from the parent plant and can
begin to grow.