Which of these forms of biomass are polymers 1 Cellulose 2 Lignin 3 Hemicellulose Select t...........

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Which of these forms of biomass are polymers?

1.Cellulose

2.Lignin

3.Hemicellulose

Select the correct answer using the codes below.

1 and 2 only

2 only

3 only

1, 2 and 3

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Explanation:

They are parts of Lignocellulose which refers to plant dry matter (biomass).

It is the most abundantly available raw material on the Earth for the production of biofuels, mainly bio- ethanol.
It is composed of carbohydrate polymers (cellulose, hemicellulose), and an aromatic polymer (lignin). These carbohydrate polymers contain different sugar monomers (six and five carbon sugars) and they are tightly bound to lignin.
Lignocellulosic biomass can be broadly classified into virgin biomass, waste biomass and energy crops. Virgin biomass includes all naturally occurring terrestrial plants such as trees, bushes and grass.