Concept:The gaseous product of photosynthesis in plants is oxygen, which is essential for respiration, the process that releases energy in organisms.
Explanation:During photosynthesis, plants use light energy to convert carbon dioxide and water into glucose and oxygen.
The chemical equation for photosynthesis is:
6CO2+6H2O→C6H12O6+6O2.
The oxygen gas released is a vital requirement for respiration in living organisms.
Respiration involves the breakdown of glucose (or other respiratory substrates) using oxygen to release energy.
This process is summarized as:
C6H12O6+6O2→6CO2+6H2O+energy.
Thus, the gaseous product of one plant process (photosynthesis – oxygen) is necessary for another energy-releasing process (respiration).
Among the given options, only "Photosynthesis and Oxygen" correctly fits the description.
Answer:C. Photosynthesis and Oxygen