What is hyperglycemia?

Classify the following into monosaccharides and disaccharides:
Ribose,$2-$deoxyribose,maltose,galactose,fructose,and lactose.

Cellulose upon acetylation with excess acetic anhydride $/$ $H_2SO_4$ (catalytic) gives cellulose triacetate whose structure is

Identify glycosidic linkages for formation of chain and branches respectively in amylopectin.

Consider the following reactions:
$(i)$ $\text{Glucose} + ROH$ $\xrightarrow{\text{dry } HCl} \text{Acetal}$ $\xrightarrow{x \text{ eq. of } (CH_3CO)_2O} \text{acetyl derivative}$
$(ii)$ $\text{Glucose}$ $\xrightarrow{Ni/H_2} A$ $\xrightarrow{y \text{ eq. of } (CH_3CO)_2O} \text{acetyl derivative}$
$(iii)$ $\text{Glucose} \xrightarrow{z \text{ eq. of } (CH_3CO)_2O} \text{acetyl derivative}$
$x, y$ and $z$ in these reactions are respectively:

Write two main functions of carbohydrates in plants.