Transcript The stages of fertilisation in a flowering plant

The stages of fertilisation in a
flowering plant
Structures in a flower
Stigma – the female part of a flower
where pollen grains land
Anther – the male part of the flower
that contains pollen grains, the male
gamete
Style – the female part of a flower that
connects the stigma to the ovary
Ovary – the female part of the
flower that contains the female
gametes, the ovules
Ovule – the female
sex cell
Filament – the male part of the flower
that holds up the anthers
The stages of pollination
A pollen grain from
the same or a
different flower, lands
on the stigma.
The stages of pollination
The pollen grain on the
stigma stimulates a pollen
tube to start forming.
The pollen tube grows
down the style.
The pollen grain
nucleus travels down the
pollen tube.
The stages of pollination
The pollen tube continues
to grown until it reaches
the ovary.
The pollen tube grows
into the ovary and fuses
with an ovule
The male gamete nucleus
fuses with the female
gamete (ovary).
This results in fertilisation
of the flower.