The image shows a magnified view of a leaf's surface with the stomata visible. what’s the significance of these structures in the process of photosynthesis? a micrograph of a green leaf with the stomata visible they’re the sites of maximum photosynthesizing activity because of the concentration of chloroplasts. they’re the storage sites of glucose, which is produced during the process of photosynthesis. they absorb water vapor from the atmosphere, providing water to the plant for photosynthesis. they allow the exchange of gases between cells in the leaf and the external environment. they allow light energy to enter the leaf, which is vital for the process of photosynthesis.