CTET paper 2, Feb 2016 Q64

64Cellulose-rich food substances (i.e. roughages) are considered an essential component of a balanced diet of human beings. Which one of the following is the correct statement about cellulose?

A
Human beings do not, have cellulose-digesting enzymes.
B
Cellulose is a type of carbohydrate, which gets absorbed in the human blood and gives energy.
C
Cellulose breaks down easily into smaller components which are egested as roughages.
D
The cellulose-digesting bacteria present in human beings convert cellulose into fibres.

Option : A
Explanation : Human beings do not have cellulose-digesting enzymes because its sources in alimentary canal vermiform appendix are nonfunctional and remain as a Vestigial organ.

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