How do plats get nitrogen they need?

Answer 1

The plant source of Nitrogen is Nitrate. Plants acquire nitrate through the Nitrogen Cycle. Atmospheric Nitrogen is absorbed by Nitrogen-fixing bacteria. The bacteria produce Ammonia which becomes Nitrite. Nitrite becomes Nitrate, the usable form of Nitrogen for plants. Nitrate is assimilated and absorbed by plants. Plants produce amino acids and proteins that are consumed in the food chain. Whatever consumes the proteins and amino acids will eventually die and the decomposition produces ammonia which turns into the atmospheric Nitrogen at the beginning of the cycle.

Answer 2

Plants obtain nitrogen primarily from the soil through their roots. Some plants have a mutualistic relationship with nitrogen-fixing bacteria that convert atmospheric nitrogen into a form that the plant can use. Additionally, decomposition of organic matter can release nitrogen back into the soil for plant uptake.