auxins accumulate on the shaded side of the shoot causing cells to grow faster on the shaded side and shot towards light
Why are shoots negatively geotropic
gravity producees an unequal amount of auxins on the lower side of the shoot (more on the lwer side) causing the lower side to grow faster and bend the shoot upwards
Why are roots positively geotropic
more auxin on it's lower side of root.
inhibits growth on lower side causing cells on the top to grow faster and bend downwards ( towards gravity)
why are roots negatively photographic
more auxins on shaded side of root
inhibits cell elongation on shaded side so root bends backwards into the ground
