Question

In plant metabolism, phosphorus play a major role in

• A. Evolving oxygen during photosynthesis.
• B. Creating aerobic condition.
• C. Generating carbon dioxide during respiration.
• D. Evolving carbon dioxide during respiration.

Answer 1

The correct option is C Generating carbon dioxide during respiration.

Phosphorus is absorbed by the plants from soil in the form of phosphate ions. Phosphorus is a constituent of cell membrane, certain proteins, all nucleic acids and nucleotides, and is required for all phosphorylation reactions. Thus, it is indispensable for the process of cellular respiration. In its absence, process of respiration will stop and reduced substrates will not be oxidised to carbon dioxide and water.

Therefore, the correct answer is option C.