PHOTOSYNTHESIS
LIGHT DEPENDENT REACTIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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lamellae
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granum
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thylakoid
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stroma
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Detailed explanation-1: -Stroma: The dark photosynthesis reaction occurs in stroma, a colourless jelly-like matrix of chloroplasts.
Detailed explanation-2: -Grana are connected to each other by structures called lamellae, and they are surrounded by a gel-like material called stroma.
Detailed explanation-3: -Stroma is the spot where the light-independent reaction occurs. The light-independent reaction is also recognized as the Calvin-Benson cycle, Calvin Cycle, and dark reaction. The name dark reaction creates confusion as the name shows the reaction takes place in darkness but it’s not true.
Detailed explanation-4: -The light independent process (also called dark reactions or the Calvin-Benson cycle) takes place in the stroma of the chloroplast. Carbon dioxide is modified by series of chemical reactions to form carbohydrates. The energy for these reactions comes from ATP and NADPH generated during the light dependent process.
Detailed explanation-5: -(i) Light reactions occur in grana thylakoids whereas dark reactions occur in stroma of chloroplasts.