photosynthesis i think :D
Energy source.
The Light Dependent process and then the Light Independent process (known as the Calvin Cycle).
Response to surroundings
light reaction means photosynthesis which is carried out in plants those having chlorophyll ,the final end product of light reaction is carbohydrates and carbon Di oxide
chlorophyll. it absorbs light and transfers light energy to the chlorophyll in the reaction center of the photosystems. that chlorophyll then undergoes a redox reaction.
The two reactions which occur during photosynthesis are light reaction and dark reaction. Light reaction takes place only in the presence of light. Dark reaction can occur with or without light.
pol;'
The most important product of the light reaction in plants for humans is oxygen. During photosynthesis, plants use sunlight to convert carbon dioxide and water into glucose and oxygen. Oxygen is released into the atmosphere as a byproduct of this process and is essential for human respiration.
different answers for different plants.
photosynthesis
It is the second step of photosynthesis. It does not need light
Plant does not absorb carbon monoxide. It is a gas which does not required in photosynthesis or respiration. (Biology: Light reaction and dark reaction)