Which of the following is one of the commercial products obtained from Gelidium and Gracilaria and are used to grow microbes and in preparations of icecreams and jellies? (1) Agar (2) Chlorella (3) Spirullina (4) Gymnosperms
(1) Agar Explanation: Agar, one of the commercial products obtained from Gelidium and Gracilaria are used to grow microbes and in preparations of ice-creams and jellies.