José Rodríguez
José Benedicto
Pablo Martínez
Daniel Plano
Juan Pablo
Álvaro Cánovas
Flowers are the sexual ogans of flowering plants
Most flowers have got four main parts
petal
sepal
Pistil
Stamen
petalThe petals look like brightly coloured leaves
All the petals together form the corolla
They protect the inner parts of the flower
SepalThe sepals are small green leaves that grow at the base of the flower
All the sepals together form the calyx
PistilThe pistil is the plant’s female reproductive organ
It’s got three main parts
Stigma
Style
Ovary
Ovules
StamenAre the plant’s male reproductive organs
Each stamen has got a tube collect a filament and a sac called an anther
Each anther contains many grains of pollen
For a flowering plant to reproduce the stigma must receive pollen from an anthen
The movement of pollen grains fron the anther to the sitgma is called pollination
When a bee lands on a flower, some pollen sticks to the bee’s body. The bee carries this pollen to other flowers and pollinates them. This exchange of pollen between diferent flowers is called cross-pollination
The wind can also carry pollen from one flower to another
FRUIT AND SEEDS
When grains of pollen reach the stigma, they combine with ovules to form a seed
The union of pollen with an ovule is called fertilization
After fertlization. the flower loses its petals. The fertilized ovules become seeds and the ovary grows until it become a fruit
The ovules are fertilized
The ovary grows larger
The fruit protects the seeds
When the fruit is ripe, it falls from the plant. If the fruit falls in a place with light ,water and good soil ,the seeds can grow and become new plants
Germination takes place when a seed begins to grow into a new plant