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

NCERT Solutions for Class 7th Science Chapter 2 Nutrition in Animals Page 22 Exercise Question 13


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.

Recall the concept of digestion in ruminants.
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