plants absorb amonnia or nitrate
Plants need salts containing potassium, phosphorus, nitrogen and some other minor elements.
Heterotrophs obtain nitrogen by consuming organic matter containing proteins or amino acids. They break down these complex molecules into simpler forms through digestion, allowing them to absorb and utilize nitrogen for various cellular functions.
Mineral salts. Principally nitrates and phosphates.
Plants need salts containing K, Mg, N, P etc.
ammonium salts; nitrate salts.
Nitrate or Ammonium salts. These are called Fixed Nitrogen.
Plants absorb mineral salts from soils and waters.
Mineral salts that water hyacinths use come from the surrounding water and soil. These plants are able to extract nutrients such as nitrogen, phosphorus, and potassium from the water they live in. They absorb these minerals through their roots and use them for growth and development.
the water which moves through the plants is like sap,containing salts,minerals and sugar contents...
Ammonium salts in fertilizers provide a readily available nitrogen source for plants, which is essential for their growth and development. They help improve soil fertility, promote healthy plant growth, and increase crop yields.
Plants obtain minerals from the soil through their roots. These minerals are essential for various biological processes within the plant, such as photosynthesis, growth, and reproduction. The roots absorb water and nutrients from the soil, including minerals like nitrogen, phosphorus, potassium, and others.
Simple question, not so simple to answer. The only simple answer is that plants don't have the chemistry to convert nitrogen gas into usable nitrogen-containg salts. Only very simple forms of life have that ability/chemistry.