Identify the biological structure shown in the image and label its parts.

Analysis of the Image

The image displays a diagram of a plant stoma, a pore found in the epidermis of leaves, stems and other organs, that controls the rate of gas exchange. It is surrounded by a pair of specialized cells known as guard cells that are responsible for regulating the size of the stomatal opening.

• Stoma (Pore): The central opening through which gas exchange occurs.
• Guard Cells: The two bean-shaped cells that surround the stoma and regulate its opening and closing.
• Epidermal Cells: The surrounding cells of the plant's epidermis.
• Chloroplasts: Small organelles within the guard cells, responsible for photosynthesis (often depicted as dots within the guard cells).