Answer:
Plants require 17 essential elements for growth: carbon (C), hydrogen (H), oxygen (O), nitrogen (N), phosphorus (P), potassium (K), sulfur (S), cal- cium (Ca), magnesium (Mg), boron (B), chlorine (Cl), copper (Cu), iron (Fe), manganese (Mn), molybdenum (Mo), nickel (Ni), and zinc (Zn).
Cell membrane, The cell membrane forms a boundary that separates the cellular contents from the outside environment. The cell membrane is capable of receiving and recognizing chemical signals. The cell membrane forms a barrier that keeps all substances that might harm the cell from entering the cell. (Pls mark me as brainliest!)