B5.4 Plant hormones Flashcards
1
Q
What is the plant response to light called?
A
Phototropism.
2
Q
What is gravitropism or geotropism?
A
The plant response to gravity.
3
Q
What is the role of gibberellins in plants?
A
Initiates seed germination.
4
Q
Which plant hormone controls cell division and the ripening of fruits?
A
Ethene.
5
Q
In which industries are plant hormones regularly used?
A
Agriculture and horticulture.
6
Q
State three ways in which auxins are used.
A
“1. Weed killers
- Rooting powders (to stimulate the development of roots)
- Promoting growth of plant tissue cultures”
7
Q
How is ethene used in the food industry?
A
To control fruit ripening during storage and transport.
8
Q
How are gibberellins used in industry?
A
“1. To end seed dormancy
- To promote flowering
- To increase fruit size”
