Amylose, a polysaccharide, constitutes the soluble portion of starch and exhibits partial solubility in water, generally ranging from 20% to 30%. Step 1: Evaluate the solubility range. Amylose exhibits a solubility of 20% to 30% in water, aligning with its characteristics as a polysaccharide. Step 2: Conclusion. Consequently, the solubility of amylose is confirmed to be between 20% and 30%.