Multiple choice The ground substance of connective tissue is basically composed of Lipids Phospholipids Mucopolysaccharides Monosaccharides Reveal answer Fill a bubble to check yourself C Correct answer Explanation The ground substance of connective tissue is composed of a complex mixture of proteins and carbohydrates, primarily glycosaminoglycans, which are a type of mucopolysaccharide. These molecules trap water to form a gel-like matrix.