there is a reason. it does not need light.
The main energy-storing product of the light-dependent phase of photosynthesis is ATP (adenosine triphosphate) and NADPH. In the light-independent phase, the main energy-storing product is glucose.
Photosynthesis occurs in two main steps: light-dependent reactions and light-independent reactions (Calvin cycle). In the light-dependent reactions, light energy is used to split water and produce ATP and NADPH. In the light-independent reactions, ATP and NADPH are used to convert carbon dioxide into glucose.
Water and Carbon dioxide
The "light dependent phase" or "light-dependent reaction" is a phase in photosynthesis in which light is absorbed by the photosystems (PS I and PS II) in the thylakoid membranes and electrons flow through the electron transport chains.
In the second phase of photosynthesis, known as the light-independent reactions or the Calvin cycle, carbon dioxide is converted into glucose using the energy stored from the light-dependent reactions. This process takes place in the stroma of the chloroplasts and does not require light to occur.
Calvin cycle or light independent reaction
The second phase of photosynthesis is called the light-independent reactions, also known as the Calvin cycle. In this phase, the products of the light-dependent reactions, ATP and NADPH, are used to convert carbon dioxide into glucose. So, the main product of the second phase of photosynthesis is glucose.
No, chlorophyll is not needed during the dark phase of photosynthesis. Chlorophyll is a pigment that absorbs light energy to drive the light-dependent reactions of photosynthesis, which only occur during the light phase. In the dark phase (or light-independent phase), known as the Calvin cycle, chemical reactions use ATP and NADPH produced during the light phase to convert carbon dioxide into glucose.
The Chloroplast or Chlorophyl of the plant.
The Calvin cycle is a light-independent process because it does not directly require light energy to function. It can occur in the absence of light, utilizing the products of the light-dependent reactions of photosynthesis to convert carbon dioxide into glucose.
The light-independent reactions occur in the storm of the chloroplast. The light- independent reactions are "independent" from light so they can happen else where. The light-dependent reactions happen in the thylakoid membrane of the chloroplast where the light is absorbed, and the reactions depend on the light.
It is called the dark combining.