Here's a breakdown:
* Photosynthesis: This is the process where plants convert light energy from the sun into chemical energy (in the form of sugars).
* Chlorophyll: Plants have a green pigment called chlorophyll that absorbs sunlight, particularly in the red and blue wavelengths.
* Light-dependent reactions: The absorbed light energy is used to split water molecules, releasing electrons and hydrogen ions. This also produces oxygen as a byproduct, which is released into the atmosphere.
* Light-independent reactions (Calvin cycle): The electrons and hydrogen ions are used to convert carbon dioxide from the atmosphere into glucose (sugar).
So, in a nutshell, sunlight is the ultimate source of energy for photosynthesis.
