Using Grammatical Signals Suitable to Patterns of Idea Development
Reproduction in plants(2)
1.
2. Reproductive parts of
flowering plants
Flowers usually have male and female parts.
The male part of the flower is made up of 2 parts
they are anther and the filament.
the female part of the flower is made up of three
parts they are the stigma, the style and the ovary.
3. Pollination
Pollination is the process by which pollen grains are
transferred from the anther to the stigma.
Some animals such as insects ,birds help in
pollination. Wind can also help in pollination to
transfer pollen grains.
4. Fertilisation
Each pollen grain contains 2 male sex cells, which
travel through the pollen tube to the female sex cell
held in the ovule.
After fertilisation ,the ovule develops into a seed and
the ovary forms a fruit.
5. Dispersing seeds
Seeds need to dispersed away from the adult plants.
The adult plants needs air, water ,sunlight, and
mineral salts to survive.
Seeds can be dispersed by wind,water,animals or by
splitting open.
6. Germination
If seed is not dead ,it will germinate when it gets
enough water , air and warmth
A seed does not need light to germinate.
When a root grows out of a seed ,it shows that the
seed has germinated
7. Quiz time !
Name them.
What is the four stages in plants?
The stages are pollination, germination, fertilisation and
dispersal.
What is fertilisation?
Fertilisation is the process in which a male sex cell fuses with
the female sex cell.
How many ways are there in dispersing seed name them?
There are four ways. They are animals,wind,water and
spilitting open
What do you need for germination?
It need water ,air and warmth.
