NCERT Solutions for Class 7 Science Chapter 17
Important NCERT Questions
7th Chapter 17 Forests: Our Lifeline
NCERT Books for Session 2022-2023
CBSE Board and State Board
Questions No: 4
Explain the role of forest in maintaining the balance between oxygen and carbon dioxide in the atmosphere.
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Forests are vital in balancing oxygen and carbon dioxide in the atmosphere. Through photosynthesis, trees absorb carbon dioxide and produce oxygen, contributing to the air we breathe. They act as carbon stores, capturing carbon and storing it in their biomass and soil. While trees respire and release carbon dioxide, during daylight hours, photosynthesis exceeds respiration, resulting in a net release of oxygen. This delicate balance helps regulate oxygen levels and reduces the concentration of carbon dioxide, making forests crucial for maintaining a healthy atmosphere.
Forests play an important role in maintaining the balance between oxygen and carbon dioxide in the atmosphere. Forest works like a self-sustaining system. Whatever is produced in the forest is utilized by different components of the forest. Animals during respiration take in oxygen and release carbon dioxide. Plants take in carbon dioxide and release oxygen through the process of photosynthesis. Even the waste is converted into beneficial substances in a forest. Due to this, there is no waste in a forest.
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