Mitochondria in a plant cell are typically colorless. These organelles are often depicted in diagrams with a specific color for clarity, but in reality, they do not have a distinct color. Mitochondria are responsible for producing energy in the form of ATP through cellular respiration. Their appearance under a microscope is usually translucent or slightly granular due to their internal structures, such as the cristae.
While the cell itself may contain pigments like chlorophyll, which gives plants their green color, these pigments are not present in mitochondria. Therefore, mitochondria remain colorless and are not directly visible without staining or special microscopy techniques.