Phototropism Flashcards
1
Q
Auxins:
A
Made at the apical tip and diffuse downwards
2
Q
Name the three roles of auxins in plants:
A
Promotes growth
Causes apical dominance
Tropic movements
3
Q
Auxins cause:
A
Apical dominance because high concentrations at the top of the plant inhibit lateral branches from growing
4
Q
If the concentration of the auxins is too high…
A
Cell elongation will be stopped
5
Q
Auxins promote growth by stimulating mitosis and…?
A
Cell elongation
6
Q
Auxins are made where?
A
Tips of stems and roots
7
Q
Phototropism:
A
Auxins cause cell elongation
On the dark side cells elongate
On the light side cells remain small
Causes the stem to bend towards light
8
Q
Do auxins move away from or towards light?
A
Away
