To solve this problem, we need to analyze the given statements:$\newline \bullet$Statement I: The primary CO2 acceptor in C4 plants is phosphoenolpyruvate and is found in the mesophyll cells.$\newline$ - In C4 plants, the initial fixation of CO2 occurs in the mesophyll cells.$\newline$ - Phosphoenolpyruvate (PEP) acts as the primary CO2 acceptor, forming oxaloacetate.$\newline$ - This process is characteristic of C4 photosynthesis, which helps in reducing photorespiration.$\newline$ - Therefore, Statement I is correct.$\newline \bullet$Statement II: Mesophyll cells of C4 plants lack RuBisCo enzyme.$\newline$ - In C4 plants, RuBisCo is present in the bundle sheath cells, not in the mesophyll cells.$\newline$ - The separation of initial CO2 fixation and the Calvin cycle into different cell types is a key feature of C4 photosynthesis.$\newline$ - Hence, mesophyll cells indeed lack RuBisCo, making Statement II correct.$\newline$Both statements are correct, and they describe the spatial separation of processes in C4 plants.$\newline$Therefore, the correct answer is Option 1: Both Statement I and Statement II are correct.