Products of hydrolysis of lactose are -

1. β-D-galactose and β-D-glucose.

2. $\mathrm{\alpha }$-D-galactose and $\mathrm{\alpha }$-D-glucose.

3. $\mathrm{\alpha }$-D-galactose and β-D-maltose.

4. β-D-galactose and β-D-fructose.

The product of D-glucose with HI is -

Carbohydrates are useful for plants-

1. To build cell membrane.

2. To support structure.

3. To serve as a storage molecule.

4. To help in the transport mechanism.

Reducing sugars are -

The term glycosidic linkage means :

Monosaccharides are: