While gazing into an aquarium, you see bubbles from an aquatic plant. What is the name of this effect?

Hydrophonic plants are plants that is living in the lands, and obviously the aquatic plants that are typically used to style aquariums. However, the bubbles you can perceive in an aquatic plant can perhaps be a source of oxygen which is recognized as one of the products of plants as well as human respiration. The bubbles are oxygen and are created from the thylakoid membrane in the chloroplast over photosynthesis.