1. Reproduction in Flowering Plants

2. Flower Sexual reproductive structure Produces egg and sperm
Fertilization takes place inside the flower

3. Female reproductive organ
Pistil
*Stigma –top of the pistil,
Sticky surface for pollen to stick to
*Style – connects the stigma to the ovary
*Ovary –contains ovules
( eggs)
Stamen
*Anther – produces male nuclei enclosed by pollen grains.
*Filament – holds the anther up

4. Pollination Self-pollination
Pollen from the anther is transferred to the stigma

5. Cross Pollination
Pollen from the anther of one plant is transferred to the the stigma of a different plant

6. When a pollen grain lands on the stigma, it germinates and a pollen tube grows down through the style to an ovule (egg)

7. The ovary and fertilized ovule develop and ripen.
*The ovule forms the seed and the ovary forms the fruit.
A fruit is a ripened ovary

8. The plant embryo uses food stored in the cotyledon of the seed until it develops leaves for photosynthesis

9. Wind/Insect Pollination

10. Wind Pollinated Flowers
Feature
Reason
small petals, often brown or dull green
no need to attract insects
no scent
no nectar
pollen produced in great quantities
because most does not reach another flower
pollen very light and smooth
so it can be blown in the wind
anthers loosely attached and dangle out
to release pollen into the
wind
stigma hangs outside the flower
to catch the drifting pollen
stigma feathery or net like

11. Insect Pollinated Flowers
Feature
Reason
large, brightly coloured petals
to attract insects
often sweetly scented
usually contain nectar
moderate quantity of pollen
less wastage than with wind pollination
pollen often sticky or spiky
to stick to insects
anthers firm and inside flower
to brush against insects
stigma inside the flower
so that the insect brushes against it
stigma has sticky coating
pollen sticks to it