Table of Contents
Where do light reactions occur plants?
In plants, the so-called “light” reactions occur within the chloroplast thylakoids, where the aforementioned chlorophyll pigments reside. When light energy reaches the pigment molecules, it energizes the electrons within them, and these electrons are shunted to an electron transport chain in the thylakoid membrane.
Where do the dark or light-independent reactions occur?
The Calvin cycle is also called the dark reactions or light-independent reactions because it is the part that doesn’t need energy from the sun to happen. The Calvin cycle takes place within the stroma of the chloroplast.
Does light reaction occur in stroma?
It is the colourless fluid present within the chloroplast cells containing chlorophyll pigment. It is present within the inner membrane of the chloroplast. The dark reaction takes place in stroma which is also known as the Calvin cycle or light-independent reactions. The light reaction takes place in the discs.
Where does Dark reaction occur in plants?
stroma
The dark reaction occurs in the stroma of the chloroplast, where they utilize the products of the light reaction. Plants capture the carbon dioxide from the atmosphere through stomata and proceed to the Calvin cycle.
How does dark reaction occur?
The series of biochemical reactions in photosynthesis that do not require light to proceed, and ultimately produce organic molecules from carbon dioxide. The energy from ATP (produced during the light reactions) drives the dark reactions of photosynthesis.
Do dark reactions occur in the light?
The term dark reactions does not mean the reactions happen at night or that they require darkness. It means that the reactions can proceed regardless of the amount of light available. The term is only used to identify the dark reactions with the light reactions, which obviously require light.
Where does Dark reaction occur in chloroplast?
Dark reactions of photosynthesis are the chemical reactions that convert carbon dioxide and other compounds into glucose. These reactions occur in the stroma. Stroma is a fluid filled area of a chloroplast outside the thylakoid membrane.
Why do dark reactions occur in stroma?
In the dark reaction, plants use carbon dioxide with ATP and NADPH from the light reactions to produce glucose….
| Light reactions | Dark reactions |
|---|---|
| It takes place in the grana of the chloroplast. | It occurs in the stroma of the chloroplast. |
Where do Calvin cycle occur?
Unlike the light reactions, which take place in the thylakoid membrane, the reactions of the Calvin cycle take place in the stroma (the inner space of chloroplasts).