Question

Can we survive only on raw, leafy vegetables/grass?

NCERT Class 7th Science Chapter 2 Nutrition in Animals

Answer 1

No, as they contain cellulose which remains undigested due to the absence of cellulose digesting enzymes which left as a wastage.

Answer 2

No, Humans cannot survive only on raw, leafy vegetables, or grass. It is because the grass is rich in cellulose, which is a type of carbohydrate that humans are not able to digest due to the absence of cellulose-digesting enzymes.