(i) Terylene – (b) Ester linkage

We know, terylene is a polyester, and a polyester is a polymer having the ester linkage.

(ii) Nylon – (d) Amide linkage

Nylons are polyamides which means they have an amide linkage.

(iii) Cellulose – (a) Glycosidic linkage

Explanantion:

Cellulose is derived from D glucose units which have the β ( glycosidic bonds. The linkage here observed is termed as glycosidic linkage.

(iv) Protein – (d) Amide linkage.

If we look at the structure of protein we will find the presence of amide linkage along with amino acids and polypeptide chain.

(v) RNA – (c) Phosphodiester linkage

A phospodiester bond is a covalent bond in which a phosphate group joins adjacent carbons through ester linkages.

The phosphodiester bond links a 3' carbon to a 5' carbon in DNA and RNA.