The calvin cycle should not be called the "dark reactions" of photosynthesis because
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The light-independent reactions, or dark reactions,[1] of photosynthesis are chemical reactions that convert carbon dioxide and other compounds into glucose. These reactions occur in the stroma, the fluid-filled area of a chloroplast outside the thylakoid membranes. These reactions take the products (ATP and NADPH) of light-dependent reactions and perform further chemical processes on them. There are three phases to the light-independent reactions, collectively called the Calvin cycle: carbon fixation, reduction reactions, and ribulose 1,5-bisphosphate (RuBP) regeneration.
This process occurs only when light is available. Plants do not carry out the Calvin cycle during nighttime. They instead release sucrose into the phloem from their starch
This process occurs only when light is available. Plants do not carry out the Calvin cycle during nighttime. They instead release sucrose into the phloem from their starch
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NCERT based Answer for Class 11 Biology Students
The products of light reaction are ATP, NADPH and O2.
O2 diffused out through stomata to the atmosphere.
ATP and NADPH are utilized in biosynthetic phase (Calvin Cycle).
This process does not directly depend on presence of light but is dependent on the products of light reaction i.e., ATP and NADPH.
Immediately after light becomes unavailable, the biosynthetic process continues for some time and then stops. Thus, the dark reaction is a misnomer.
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