Question
Biology Question on The Tissue System
Cotton fibres mainly contains
A
cellulose
B
glycogen
C
protein
D
lipid
Answer
cellulose
Explanation
Solution
The cotton fibres represent epidermal prolongations of seed coat cells. A raw cotton fibre, on average, gives the following values on analysis : cellulose, 94%, protein - 1.3%, pectic substances - 0.9%, ash - 1.2%, wax - 0.6%, sugars - 0.3% and traces of pigments and mineral matter.