Changes

: '''Gravitropism''' can be [[Positive Gravitropism]] positive or [[Negative Gravitropism]]negative.: In the [[Shoot System|shoot system]] of [[plant]]s the [[growth]] is due to [[Negative Gravitropism|negative gravitropism]] where the [[shoot]]s grow up from the ground.: In the [[Rood Root System|root system]] of [[plant]]s the [[growth]] is due to [[positive Gravitropism|positive gravitropism]] where the [[root]]s grow down deeper into the ground.