Agar is prepared from:: (A) Bullock heart, (B) Chemicals, (C) Seaweed, (D) Chick cells
Answer is C. Agar, a polysaccharide extracted from certain types of seaweed, is the main active ingredient in the material, while water is the major constituent in the agar impression material.
Reference: PHILLIPS’ SCIENCE OF DENTAL MATERIALS, 12th ed page no 170