Processes Plants take up essential elements from the soil through their roots (hydrogen and oxygen in the form of water; nitrogen) and from the air ( carbon and oxygenin the form of carbon dioxide ) through their leaves. Nutrient uptake in the soil is achieved by cation exchange, wherein root hairs pump hydrogen ions (H+) into the soil through proton pumps. These hydrogen ions displace cations attached to negatively charged soil particles so that the cations are available for uptake by the root. In the leaves, stomata open to take in carbon dioxide and expel oxygen. The carbon dioxide molecules are used as the carbon source in photosynthesis.
Processes Plants take up essential elements from the soil through their roots and from the air ( mainly consisting of nitrogen and oxygen ) through their leaves. Nutrient uptake in the soil is achieved by cation exchange, wherein root hairs pump hydrogen ions (H+) into the soil through proton pumps. These hydrogen ions displace cations attached to negatively charged soil particles so that the cations are available for uptake by the root. In the leaves, stomata open to take in carbon dioxide and expel oxygen. The carbon dioxide molecules are used as the carbon source in photosynthesis.
R
(hydrogen and oxygen in the form of water; nitrogen) and
and
R
carbon and oxygenin the form of carbon dioxide
mainly consisting of nitrogen and oxygen