HORTICULTURE

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: -Within the Chloroplast Stroma, the Calvin cycle takes place. Option (c) Chloroplast Stroma is the correct response.

Detailed explanation-3: -The Calvin cycle, Calvin-Benson cycle, or Calvin-Benson-Bassham cycle (CBB-cycle) takes place in the stroma of plant chloroplasts. It entails a series of reactions during which carbon dioxide is reduced and sugar precursors are formed, using the chemical energy (ATP and NADPH) captured by the light reactions.

Detailed explanation-4: -What is stroma in a chloroplast? Stroma is the fluid-filled internal space of the chloroplasts which encircle the grana and the thylakoids. It contains chloroplast DNA, starch and ribosomes along with enzymes needed for the Calvin cycle.

Detailed explanation-5: -Answer and Explanation: The Calvin cycle or the light independent reactions of photosynthesis take place in the stroma of the chloroplast. The stroma is the fluid space surrounding the grana of chloroplast. The light dependent reactions occur in the thylakoid membrane.