Answer:
The correct answer would be C.) Photosynthesis and cellular respiration are complementary processes that could not occur without one another.
Photosynthesis is the process by which green plants convert sunlight into chemical energy or food or glucose.
It produces glucose or food from simpler substances like carbon dioxide and water in presence of sunlight and chlorophyll.
The overall reaction can be written as:
6CO₂ + 6H₂O + sunlight → C₆H₁₂O₆ + 6O₂
In contrast, the cellular respiration converts the chemical energy of the food into ATP (adenosine triphosphate).
It oxidizes glucose completely in presence of oxygen to produce carbon dioxide, water, and energy (approximately 36-38 ATP).
It takes place in almost all organism including plants.
C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + energy (ATP)
Thus, we can say that photosynthesis and cellular respiration are complementary to each other.
