Question

Choose incorrect statement about photosynthesis.

• A. It is a physico- chemical process
• B. Oxygen is not evolved as a by product in most photosynthetic organisms
• C. Occurs in unicellular and multicellular photoautotrophs
• D. Anabolic and reductive process

Answer 1

The correct option is B Oxygen is not evolved as a by product in most photosynthetic organisms

• Photosynthesis is a physico - chemical process that occurs in the living systems and involves the conversion of solar energy into chemical energy in the form of organic carbon as glucose.
• It starts with the absorption of photons from sun-light by the chlorophyll and subsequent production of assimilatory powers of ATP and NADPH in light reaction and then usage of these assimilatory powers in the dark reaction for the reduction of the carbon dioxide.
• Oxygen is evolved as the by-product during the light reaction of photosynthesis but there are examples of non-oxygenic photosynthetic bacteria as well like Rhodospirillum.
• etc.) and multicellular (plants) that are photoautotrophic. It is an anabolic process, resulting in the formation of glucose and a reductive process resulting in a reduction of carbon dioxide.

Hence, the correct answer is option B.