The question asks about the location of the Calvin Cycle in C4 plants. To answer this, we need to recall the specialized anatomy and biochemical pathway of C4 photosynthesis.
Therefore, the Calvin Cycle, which is the reductive pentose phosphate pathway, takes place in the bundle sheath cells of C4 plants.
Correct Option: B) Bundle sheath cells
The question asks about the function of accessory pigments in photosynthesis. Photosynthesis is the process by which plants convert light energy into chemical energy. This process involves various pigments, primarily chlorophyll, but also accessory pigments. Understanding the role of these different pigments is key to answering this question.
C) Absorb additional wavelengths. Accessory pigments like carotenoids and chlorophyll b absorb light energy at wavelengths that chlorophyll a does not absorb efficiently. This absorbed energy is then passed on to chlorophyll a, effectively increasing the range of light available for photosynthesis.
The question asks about the specific role of the PEPCase enzyme in C4 plants. To answer this, we need to recall the initial steps of carbon fixation in the C4 pathway.
B) Fixation of CO\(_2\) to PEP
As explained, PEPCase catalyzes the carboxylation of PEP by fixing \(\text{CO}_2\) to it, forming a 4-carbon compound (oxaloacetate) in the mesophyll cells of C4 plants.
The question asks for the source of oxygen released during photosynthesis. Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll. This process involves carbon dioxide and water as reactants. Understanding the overall chemical equation and the specific reactions involved helps identify the origin of the released oxygen.
Correct Option: C) \(\text{H}_2\text{O}\) — The oxygen released during photosynthesis originates from the splitting of water molecules (\(\text{H}_2\text{O}\)) during the light-dependent reactions, a process known as photolysis.
The question asks for the optimum temperature range for C3 plants. This requires knowledge of the physiological characteristics of C3 plants, specifically their photosynthetic efficiency at different temperatures.
The question asks to identify the scientist who used radioactive carbon-14 (\(^{14}\text{C}\)) to trace the path of carbon in photosynthesis. This requires knowledge of key experiments and discoveries in the field of photosynthesis.
B) Melvin Calvin used radioactive \(^{14}\text{C}\) (carbon-14) to trace the path of carbon in photosynthesis. His experiments led to the elucidation of the Calvin cycle, which describes the chemical reactions that convert carbon dioxide and other compounds into glucose.