New
New
Year 11
Edexcel
Higher
The effects of gibberellins and ethene on plant growth and development
I can describe effects of gibberellins and ethene on plant growth and development.
New
New
Year 11
Edexcel
Higher
The effects of gibberellins and ethene on plant growth and development
I can describe effects of gibberellins and ethene on plant growth and development.
These resources will be removed by end of Summer Term 2025.
Switch to our new teaching resources now - designed by teachers and leading subject experts, and tested in classrooms.
Lesson details
Key learning points
- Gibberellins are plant hormones that cause plants to produce flowers and cause seeds to germinate.
- Plant breeders use gibberellins to force plants to produce flowers so they can be pollinated and increase size of fruit.
- Ethene is a plant hormone that causes ripening of fruit.
- Commercial fruit growers use ethene to speed up fruit ripening so that fruit is ready for sale.
Keywords
Gibberellins - A plant hormone involved in many processes in growth and development, including germination.
Ethene - A gas naturally produced by a plant to activate fruit ripening.
Ripening - The process of a fruit changing to be ready to be eaten.
Germination - The process of seeds developing into new plants.
Common misconception
Fruit can only ripen whilst it is on the plant.
Discussion of fruits that are picked unripe, e.g. nectarines, tomatoes, avocados, bananas, and that they are ripened in transit.
Pupils could research the location of where different fruits are grown and how they are transported across the world.
Teacher tip
Equipment
None required.
Licence
This content is © Oak National Academy Limited (2024), licensed on
Open Government Licence version 3.0
except where otherwise stated. See Oak's terms & conditions (Collection 2).Lesson video
Loading...
Starter quiz
Download starter quiz
6 Questions
Q1.
True or false? Plants have hormones.
false
Q2.
Plant hormones that control a plants' response to a stimulus are called...
Q3.
What is the term given to the growth response of a plant to a stimulus?
auxin
germination
fertilisation
pollination
Q4.
True or false? Fruits are a seed.
true
Q5.
What does a seed contain?
formed roots
egg
Q6.
What triggers germination?
carbon dioxide
nutrients
Exit quiz
Download exit quiz
6 Questions
Q1.
is a gas naturally produced by fruit that activates fruit ripening.
Q2.
What is the role of gibberellins?
selective weed killers
control growth towards a stimulus e.g. light
Q3.
What are the advantages of using ethene in transit?
it prevents ripening
ethene makes fruits firmer and less likely to be damaged
Q4.
Why would a plant breeder apply artificial gibberellins to their plants?
to speed up fruit ripening in transit
to encourage root growth as a rooting powder
Q5.
A banana is over-ripe and has caused the other fruit in the fruit bowl to ripen. Which plant hormone was the banana producing to cause this?
Q6.
A farmer would like to produce seedless fruit. Which plant hormone would the farmer apply to their crop?