Question

What did Van Helmont's experiment prove?

Answer 1

van helmenton wanted to prove plants use material from the soil to plants use materials from the soil to perform photosynthesis. so he performed an experiment where he took a plot of soil and a Willie seedling and weighed the pot of soil and a willow tree separately after 5 years of performing photosynthesis he took the tree out and weighed it.

Answer 2

As the weight of the soil had hardly changed, Van Helmont concluded that plant growth can't only be due to minerals from the soil.....but also from carbondioxide

hope it helped:)