"Photosynthetic" refers to the process of photosynthesis, which is the biological process by which green plants, algae, and certain bacteria convert sunlight, carbon dioxide, and water into glucose (a form of sugar) and oxygen. This process occurs in specialized cell structures called chloroplasts, which contain the green pigment chlorophyll. Chlorophyll captures light energy from the sun and uses it to drive the chemical reactions that convert carbon dioxide and water into glucose and oxygen. Photosynthesis is a fundamental process that sustains life on Earth by providing food and oxygen for many organisms in the ecosystem.
I hope this helped!
~~~Harsha~~~