Which of the following is not a disaccharide?

In polysaccharides,the linkage connecting monosaccharide units is called:

What is the basic structural difference between starch and cellulose?

During the curdling of milk,what happens to the sugar present in it?

Given below are two statements.
Statement $I$: Maltose has two $\alpha$-$D$-glucose units linked at $C_1$ and $C_4$ and is a reducing sugar.
Statement $II$: Maltose has two monosaccharides: $\alpha$-$D$-glucose and $\beta$-$D$-glucose linked at $C_1$ and $C_6$ and it is a non-reducing sugar.
In the light of the above statements,choose the correct answer from the options given below.

Write a note on polysaccharides.