The macronutrient which is an essential component of cell organic compounds, yet not obtained by plants from soil, is

Step-by-step solution

Carbon, oxygen, and hydrogen are called the framework elements as all the components of a living organism contain C, H and O, particularly the carbohydrates, proteins, lipids and nucleic acids. The three elements are taken up by the plant in the form of CO 2 and H 2 O.