SCIENCE
RESPIRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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grana, thylakoid
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thylakoid, stroma
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Either A or B
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None of the above
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Detailed explanation-1: -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).
Detailed explanation-2: -(i) Light reactions occur in grana thylakoids whereas dark reactions occur in stroma of chloroplasts.
Detailed explanation-3: -The light reactions take place in the thylakoid. There, water (H2O) is oxidized, and oxygen (O2) is released. The electrons that freed from the water are transferred to ATP and NADPH. The dark reactions then occur outside the thylakoid.
Detailed explanation-4: -The second stage of photosynthesis is known as the Calvin cycle, or the light-independent reactions. The transformation of Carbon dioxide to carbohydrates is called Calvin Cycle or C3 cycle and is named after Melvin Calvin who found it.
Detailed explanation-5: -The dark reactions of photosynthesis occur in the stroma of the chloroplast where they utilize the products of the light reaction. In the dark reaction, plants use carbon dioxide with ATP and NADPH from the light reactions to produce glucose.