BI111 Chapter Notes - Chapter 41: Nitrogen Cycle, Ion, Humus
Document Summary
Nine of the essential elements are macronutrients micronutrient, Essential mineral elements required in small quantities essential elements, nitrification, Hydroponics was an experimental method for identifying minerals absorbed into plant tissues that were essential for growth invented by julius von sachs. Sachs placed a plants in a solution containing specific minerals and mixed them in different combination with pure water. He then grew one plant in the same solution lacking one specific element that was present in the previous solution and performed this over and over by eliminating a new mineral everytime. Explain why carbon, hydrogen and oxygen are not considered minerals. Carbon, hyrdrogen and oxygen are not considered minerals because plants obtain them from the air and not from the soil via roots. Explain how differences in quantities of essential elements influence which plants can grow under which conditions. The differences in quantities of essential elements influence which plants grow under which conditions by causing the growth/development of abnormalities.
