Glycosidic linkage joins _____
Two monosaccharide units via oxygen atom.
One monosaccharide & a disaccharide unit with oxygen atom.
Two monosaccharide units via Hydrogen Bond.
Two monosaccharide units via carbon bond.
When two monosaccharide units are joined via an Oxygen atom then that linkage is called Glycosidic linkage. Hence option 1 is the correct answer.