44. Which of the following is a by-product of the process of photosynthesis?
Answer: B
Molecular oxygen is a by-product of the process of photosynthesis.
During photosynthesis, plants convert carbon dioxide and water into glucose and molecular oxygen. The release of oxygen occurs as a by-product, which is essential for the survival of aerobic organisms.
A) Ammonium nitrate
Ammonium nitrate is not produced during photosynthesis. It is a nitrogenous compound that can be used as a fertilizer but does not form as a direct result of the photosynthetic process.
B) Molecular oxygen
Molecular oxygen is indeed a by-product of photosynthesis. It is produced during the light-dependent reactions when water molecules are split to release electrons, protons, and oxygen, thus contributing to the oxygen supply in the atmosphere.
C) Carbon dioxide
Carbon dioxide is not a by-product; rather, it is one of the reactants used in photosynthesis. Plants absorb carbon dioxide from the atmosphere to convert it into glucose during the photosynthetic process.
D) Sodium bicarbonate
Sodium bicarbonate is not a product of photosynthesis. It is a chemical compound often used in baking and other applications, but it does not form during the conversion of light energy into chemical energy through photosynthesis.
Conclusion
Molecular oxygen is the only correct answer as it is directly produced during photosynthesis while all other options are either reactants or unrelated compounds. This highlights the core concept that photosynthesis not only provides energy for plants but also plays a crucial role in releasing oxygen into the environment, vital for many living organisms.