Question

The deficiencies of micronutrients, not only affects the growth of plants but also vital functions such as photosynthetic and mitochondrial electron flow. Among the list is given below, which group of three elements shall affect most, both photosynthetic and mitochondrial electron transport.

• A. Cu, Mn, Fe
• B. Co, Ni, Mo
• C. Mn, Co, Ca
• D. Ca, K, Na

Answer 1

The correct option is A Cu, Mn, Fe

Manganese is essential for activity of some enzymes of Kreb cycle.The enzyme is required in photosynthetic O${}_2$ evolution. Iron is the component of cytochromes and non-heme iron proteins of photosynthesis and respiration. Copper is component of enzymes of redox reactions of electron oxidative phosphorylation and photophosphorylation.

Thus, the correct answer is option A.