(N/A) Photosynthesis and respiration are complementary processes that are fundamentally linked in the energy cycle of living organisms.
$1$. In photosynthesis, plants capture solar energy to synthesize glucose from $CO_2$ and $H_2O$. The chemical equation is: $6CO_2 + 12H_2O + \text{Light Energy} \rightarrow C_6H_{12}O_6 + 6O_2 + 6H_2O$.
$2$. In respiration, the glucose produced during photosynthesis is oxidized to release energy in the form of $ATP$. The chemical equation is: $C_6H_{12}O_6 + 6O_2 \rightarrow 6CO_2 + 6H_2O + \text{Energy (ATP)}$.
$3$. These processes are interdependent: the products of photosynthesis ($glucose$ and $O_2$) serve as the reactants for respiration, while the products of respiration ($CO_2$ and $H_2O$) are utilized by plants as raw materials for photosynthesis. This creates a continuous cycle of energy and matter transformation.