PPT 2 - Flowers & Pollination
Part 1 -Flowers
Matchstick banksia (Banksia cuneata)
Naming parts of a flower
petal
stamen
style
ovary
stem
petiole
anther
6 ovules
stigma
Male bits
Female bits
pollen
pistil
Can you name parts of a Lily?
petal
stamen
anther
style
stigma
ovary
pollen
Some flowers have no petals
1. gum tree blossom
style
anther
stamen
stigma
2. A grass Tree - balga
Flower spike
stigma
stamen
anther
Flower
A flowering spike
3. A banksia - manyret
anthers ..
stamens
style
stigma
ovary
A single flower
..with pollen
Acorn banksia
B. prionotes
1000 flowers
Unopened flowers
Male bits
Female bits
How do flowers make seeds?
Flowers use the male bits and the female bits
Leschenaultia sp.
Pollen travels from the stamen of one flower to the style of another flower.
It burrows down the style to the ovule.
Pollen and ovule join and grow into a seed.
Acorn banksia flower
style
ovule
seed
flowering spike
Acorn banksia - manyret (Banksia prionotes)
What does a banksia seed do?
The flowers on the spike start to die.
The spike becomes a hard woody nut.
When seeds are fully grown, the follicles open and seeds fall to the ground.
Seeds grow inside the nut, each seed is in
a woody case, called a follicle.
Nut, with open follicles
Life cycle of manyret
Multi-licensed with CC-BY-SA-3.0 and GFDL
tree
bud
flower spike
flowers dying
seeds forming
nut with follicles
seed
Photos – Alex George
Flowers and Pollination
Part 2- pollination
Moth on Ptilotus sp.- Rob Davis
Can you say pollination?
poll
in
ay
sh
This is how it sounds
on
Now say it quickly
wasp
beetle
Who carries pollen between flowers?
I do
I do
honeyeater
…and I do
I do
Ant - bidit
Bee- djilyara
I do
Butterfly – barn barn
I do
..and we do
Honey possums (Tarsipes rostratus) - noolbenger
What a bee sees
What we see
Some flowers try hard to be pollinated
‘Flight’ paths to the nectary
Let’s pollinate the flowers in our trees
wattle
banksias
gum
sheoak
hakea
grass tree
Pollen micrographs, courtesy Lynne Milne