Question

Differentiate between light reaction and
Photorespiration is a wasteful product ? Give two reasons.​

Answer 1

Answer:

Biochemical studies indicate that photorespiration consumes ATP and NADPH, the high-energy molecules made by the light reactions. ... Thus, photorespiration is a wasteful process because it prevents plants from using their ATP and NADPH to synthesize carbohydrates.

Answer 2

Explanation:

Photorespiration is the light dependent process of oxygenation of ribulose biphosphate (RuBP) and release of carbon dioxide by the photosynthetic organs of a plant. In the photoresspiratory pathway, there is neither synthesis of sugars nor of ATP Rather , it results in the release of CO² with the utilization of ATP Therefore, photorespirtion is a wasteful process.

Light reaction takes place in the presence of sunlight while for dark reaction sunlight isn't necessary.

light reaction takes place in grana while dark reaction takes place in stroma

end product of light reaction are NADPH and ATP while end product of dark reaction is sugar