A nitrogen base is linked to sugar by a glycosidic bond at carbon number

In a nucleotide having a cytosine base and linked to a sugar by glycosidic bond at carbon number :

Glycosidic bond is

Glycosidic bond is

Assertion :- The backbone of polynucleotide chain is formed due to sugar and phosphate. Reason :- A nitrogenous base is linked to the pantose sugar through a N-glycosidic linkage to formed a nucleoside.

How nitrogenous base is linked to sugar and mention the product form?

The unit which is formed by sugar and nitrogen- base linked by glycosidic bond is called