Choose the incorrect statement.
Minerals are present in the soil as charged particles (ions).
Unloading of mineral ions occurring at vein endings is strictly through diffusion.
Girdling experiment was used to identify the tissues involved in long distance transport of food materials.
Active uptake of ions is partly responsible for the water potential gradient in roots.
Unloading of mineral ions occurs at the fine vein endings through diffusion and active uptake by living cells.