Nitrogen Is an Essential Element for Plants, and Most Plants

question 14

Multiple Choice

Nitrogen is an essential element for plants, and most plants can only use certain forms of nitrogen.What are these forms and how do they become available in the soil?

• A)Ammonification produces ammonia (NH₃); nitrification produces molecular nitrogen (N₂)
• B)Ammonification produces ammonium ion (NH₄⁺); nitrification produces nitrate (NO₃)
• C)Ammonification produces ammonium ion (NH₃⁺); denitrification produces nitrite (NO₂^-)

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