1. EVA MARÍA MORENO BERDÓN 5ºA
PARTS OF FLOWERS,
FRUITS AND SEEDS.
EVA MARÍA MORENO BERDÓN 5ºA

2. FLOWERS Are the sexual organs of flowering plants
Most flowers have got four main parts

3. PETALS
Have various functions and purposes depending on the type of plant.
In general
Petals protect some parts of the flower
Attract/repel specific pollinators
All petals together form the corolla
Surround the reproductive parts of flowers

4. Petals are usually accompanied by another set of special leaves called sepals
-Petals look like brigthly coloured leaves to attract pollinators

5. Petal Sepal Sepal Petal Petal Sepal
The outer parts of the flower
Protect the delicate inner parts of the flower
There are usually as many sepals as petals
They alternate with the petals
Petal
Sepal
Sepal
Petal
Petal
Sepal

6. sepal Consists of green leaf-like structures
Grow at the base of the flower
- All the sepals together form the calyx

7. pistil Is the plant’s female reproductive organ
The pistil consists of ovule-bearing basic units called carpels
A flower may have one or more pistils

8. Has three main parts: Stigma: area where the pollen is received
Style: where the stigma is born
Ovary: contains the embryo seeds or ovules

9. stamen Are the plant’s male reproductive organs Each stamen has got
A tube called filament
A sac called anther
Each anther contain many grains of pollen
The pollen is produced in chambers which contains the male gametes
Then it is transferred to the pistil for fertilisation to take place.

10. Pistil and stamen

11. POLLINATION
The transfer of pollen grains from the anther to the sitgma of a flower
Flowering plants use the wind, insects, bats, birds and mammals to transfer pollen from the male (stamen) part of the flower to the female (stigma) part of the flower.

12. These animals are usually nectar-drinking animals like sunbirds
Different agents
Insects
Pollen sticks to parts of insect’s bodies. Then is carried into other plants
Other animals (birds)
These animals are usually nectar-drinking animals like sunbirds
Wind
Pollen tend to be smaller and lighter in order to be carried by the wind

13. There are two types of pollination
Self-pollination
Transfer of pollen grains within one flower
One flower
Pollen grains from the anther are transferred into the stigma
Cross-pollination
Transfer of pollen grains from one flower to another
Two similar flowers
Pollen grains from the anther of one flower transferred into the stigma of the other flower

15. fertilisation
Male and female sex cells must meet and fuse to form fruits and seeds
When the male cells meet with the female cell, it is called fertilization.
This is also called sexual
reproduction because male
and female sex cells are
involved

18. germination
The growth of the root through the seed coat

19. When a seed lands on a place with sufficient warmth, water and air, it starts to germinate

20. Steps of germination
1º The root of the baby plant grows out of the seed
2º The seed coat falls on the ground
3º The shoot appears and breaks through the soil and the first leaves show
4º The cotyldeons fall on the ground
5º The young plant now can make its own food with the sunlight by photosynthesis

21. VIDEO
A plant story
Parts of a flower

22. GAMES Life cycle of a plant Go flower grow How plants grow
Kinder garden game

23. Questions and answers - How many parts have the flower?
It has four main parts: petals, sepal, pistil and stamen
All petals together form the…?
They form the corolla
- What protect sepals?
They protect the inner parts of the flowers
- Where sepals grow?
They grow at the base of the flower

24. Questions and answers What are the three main parts of the pistil?
Stigma, style and ovary
What is pollination?
Pollination is the transfer of pollen grains form the anther to the stigma of a flower
Which are the agents of pollination?
The different agents of pollination are insects, other animals like birds and wind

25. Questions and answers
In which type of pollination the pollen grains are transfered from one flower to another?
In cross pollination
When the male sex cells join with the female sex cells within an ovule is called…
Fertilisation
Which are the parts of the stamen?
Filament and anther

26. THE
END