Plant Hormones Flashcards
1
Q
What is plant tropism?
A
Growing towards or away from a stimulus
2
Q
What is phototropism?
A
When a plant would grow away or towards light
3
Q
What is geotropism?
A
When a plant would grow away or towards gravity
4
Q
What is hydrotropism?
A
When a plant would grow away or towards water
5
Q
What hormone controls where the plant grows towards?
A
Auxin
6
Q
What tropisms does a shoot of a plant do?
A
Positive Phototropism
Negative Geotropism
7
Q
What tropisms does the roots of a plant do?
A
Negative Phototropism
Positive Geotropism
8
Q
Describe how auxin affect the shoot of the plant when the sun is to one side?
A
- Auxin is made in the tip
- Light is detected by cells at the tip
- Auxin diffuses down to the dark side
- Where auxin moves the cells elongate
- Shoot now bends towards the light
9
Q
What happen when the sun is directly on top of the shoot?
A
Auxin will diffuse equally downwards causing a taller shoot as auxin elongates lower down in the shoot
10
Q
A
