LIFE SCIENCE

Detailed explanation-1: -Plants, algae, and cyanobacteria, known as photoautotrophs, are the only organisms capable of performing photosynthesis. Heterotrophs, unable to produce their own food, rely on the carbohydrates produced by photosynthetic organisms for their energy needs.

Detailed explanation-2: -During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil. Within the plant cell, the water is oxidized, meaning it loses electrons, while the carbon dioxide is reduced, meaning it gains electrons. This transforms the water into oxygen and the carbon dioxide into glucose.

Detailed explanation-3: -Photosynthesis in the leaf blade is expected as this is a plant organ in flowering plants (angiosperms) designed for this purpose. Photosynthesis, in many plants, extends to the petioles [3], or leaf stalks, stems [3] (including branches or trunks), floral structures [4], seeds [5, 6], and fruits [7, 8] (Table 1).