Question
How do plants obtain nitrogen?
They remove it from the air.
They absorb it through their roots.
They fix it in their leaves.
They produce it in their stems.
They remove it from the air.
They absorb it through their roots.
They fix it in their leaves.
They produce it in their stems.
Answers
GPT-4o mini
Plants primarily obtain nitrogen through the following method:
**They absorb it through their roots.**
Most plants take up nitrogen in the form of nitrate (NO3-) or ammonium (NH4+) present in the soil. Some plants, particularly legumes, have a symbiotic relationship with nitrogen-fixing bacteria in their root nodules, which can convert atmospheric nitrogen (N2) into forms that plants can use. However, the direct absorption through roots is the primary means by which most plants acquire nitrogen.
**They absorb it through their roots.**
Most plants take up nitrogen in the form of nitrate (NO3-) or ammonium (NH4+) present in the soil. Some plants, particularly legumes, have a symbiotic relationship with nitrogen-fixing bacteria in their root nodules, which can convert atmospheric nitrogen (N2) into forms that plants can use. However, the direct absorption through roots is the primary means by which most plants acquire nitrogen.