Carbohydrates are stored in plants and animals in which of the following forms respectively?

Reducing saccharides among the following are:

Sucrose	Ribose	Maltose	Lactose	Cellulose
$1$	$2$	$3$	$4$	$5$

The optical rotation of the $\alpha$-form of a pyranose is $+150.7^{\circ}$,that of the $\beta$-form is $+52.8^{\circ}$. In solution,an equilibrium mixture of these anomers has an optical rotation of $+80.2^{\circ}$. The percentage of the $\alpha$-form in the equilibrium mixture is $....... \%$.

Identify the molecular formula of laevulose.

Aldopentoses named as ribose and $2-$deoxyribose are found in nucleic acids. What is their relative configuration?

Write the reactions of $D-Glucose$ which cannot be explained by its open-chain structure. How can the cyclic structure of glucose explain these reactions?