In this module, you will learn:
- the process of fertilisation in plants
- the development of fruit and seeds
Resources to help you:
- Textbook: page 136 and 137
- Notebook: page 35
Did you know?
The flower of a plant will become the fruit.
However not all fruit are edible (can be eaten).
Watch the video
See how a flower becomes a fruit.
Source: https://youtu.be/PidOBjeY6MI
You can change the speed to 0.75x to make it easier to listen.
The stages 1, 2 and 3 for fertilisation process
Credit: @mariaflaya via DepositPhotos
Fertilisation in flowers
The process of fertilisation occurs when a male sex cell (in pollen grains) fuse with the female sex cell (in ovules) to for a zygote.
There are three stages for fertilisation to take place in a flowering plant.
- The pollen grains land on the stigma of a flower.
- A pollen tube grows from the stigma of a flower to the ovary.
- The pollen tube enters the ovule and the male sex cell fuses with the female sex cell to form a zygote.
After fertilisation
Once fertilisation has taken place, the flower starts to develop into a fruit.
The petals and sepals starts to dry up.
Inside the flower, the ovule starts to develop into a seed.
The ovary starts to become bigger and in edible fruits, usually become the fleshy part of the fruit.
Timelapse of a strawberry from flower to fruit.
Source: https://www.youtube.com/watch?v=A_tNMJTvy7I
