Agar is obtained from:AGracilariaBCharaCOscillatoriaDChlorellaAnswer: A. Gracilaria Read Explanation: Agar is a jelly-like material which is derived from Red Algae such as Gelidium and Gracilaria. The jelly material in algae is due to the presence of unbranched polysaccharides obtained from the cell walls of the red algae. Read more in App