What do plants build their cell walls from?\nOptions:\n- (A) By wind and rain\n- (B) Deposition\n- (C) Deposition.\n- (D) algae\n- (E) Chemical energy\n- (F) plant wall\n- (G) plant material\n- (H) polysaccharides
Let's think step by step.
(H)
Plants use cellulose for their cell walls.

Another important polysaccharide is cellulose.

Plants use a polysaccharide for their cell walls.

.

Therefore, the answer is (H)