Paper 2 Revision Flashcards
1
Q
Three plant hormones are…
A
auxin, ethene, gibberellins
2
Q
Auxin is found in the… and is evenly…
A
shoot and root tips… distributed down each side
3
Q
When a shoot grows towards the light and away from gravity this is…
A
positive phototropism and negative geotropism
4
Q
When a root grows down into the dark soil this is…
A
positive geotropism and negative phototropism
5
Q
What does auxin do in response to light?
A
Diffuses to the shades side and causes/ promotes more elongation on the shaded side and therefore shoot bends towards light
6
Q
What does auxin do in response to gravity?
A
Auxin moves down to under side of root due to gravity and inhibits cell elongation. Upper side root cells continues to grow causing root to grow down into soil
