NCERT Solutions for Class 11 Biology Chapter 9 Biomolecules
Important Board Questions
Biomolecules
NCERT Books for Session 2022-2023
CBSE Board and UP Board
Question : 14
Find out how much cellulose is made by all the plants in the biosphere and compare it with how much of paper is manufactured by man and hence what is the consumption of plant material by man annually. What a loss of vegetation!
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Approximately, 100 billion tonnes of cellulose are made per year by all the plants in the biosphere and it takes 17 full grown trees to make one ton of paper. Trees are also used to fulfil the other requirements of man such as for timber, food, medicines, etc. Hence, it is difficult to calculate the annual consumption of plant material by man.
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