Plant hormone that controls growth
Respons to different stimuli and moves to the shaded side of root
Phototropism - plant growth in response to light Auxins
Gravitropism - plant growth in response to gravity
Produced in the rips of roots and shoots
Stimulates cell elongation process
When the shoot is exposed to light, more auxin accumulates on
the shady side
This makes the cells elongate faster on the shaded side as there Towards light
are more auxin
The shoot bends towards the light
Shoots
Positively phototropic
When a shoot grows sideways, gravity produces an unequaly
districution of auxin in the tip, more auxin on the lower side
The lower side grows faster as there are more auxin
Plant hormones
Away from Gravity
The shoot bends upwards
Negatively gravitropic
More Auxin accumulates on the lower side
Respons to different stimuli and moves to the shaded side of root
Phototropism - plant growth in response to light Auxins
Gravitropism - plant growth in response to gravity
Produced in the rips of roots and shoots
Stimulates cell elongation process
When the shoot is exposed to light, more auxin accumulates on
the shady side
This makes the cells elongate faster on the shaded side as there Towards light
are more auxin
The shoot bends towards the light
Shoots
Positively phototropic
When a shoot grows sideways, gravity produces an unequaly
districution of auxin in the tip, more auxin on the lower side
The lower side grows faster as there are more auxin
Plant hormones
Away from Gravity
The shoot bends upwards
Negatively gravitropic
More Auxin accumulates on the lower side
