Answer:
Starch is stored in seeds. Plants use cellulose to make its trunk, stems, and leaves strong and increase the size of the tree. Since the primary component is carbon, we can say that plants and trees get their mass from the air.
Step-by-step explanation:
During photosynthesis, plants convert the sun's energy into chemical energy which is captured within the bonds of carbon molecules built from atmospheric carbon dioxide and water.Each year trees use the left-over carbon molecules to add to themselves, making themselves bigger in mass (size).