Plant nitrogen assimilation: Identify what plants convert absorbed soil nitrates into. Full question: Plants absorb dissolved nitrates (NO₃⁻) from the soil and convert them into which biomolecules? Choose the correct option.

Given data & pathway

• Plants take up nitrate (NO₃⁻) from soil.

Concept/ApproachNitrate is reduced to nitrite (NO₂⁻) and then to ammonium (NH₄⁺), which is incorporated into amino acids. Amino acids are then polymerized to form proteins.

Key stepsNO₃⁻ → NO₂⁻ → NH₄⁺ → amino acids → proteins

Final AnswerProteins.