Forests: Our Lifeline NCERT Solutions - Class 7 Science

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NCERT Solutions for Class 7 Science Chapter 17 - Free PDF Download

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NCERT solutions Class 7 Science Chapter 17 is the key to achieve good marks for students in school examination of Class 7 CBSE. These solutions will be of great help to the students in their academic career. NCERT Class 7 Science Chapter 17 helps you to get through with all questions and problems and makes you understand the chapter easily. NCERT Solutions for Science Class 7 Chapter 17 is prepared in a well defined and as per the CBSE Class 7 Science syllabus. These solutions are made by some of the expert teachers from across India, and thus it gives confidence to the students to appear in their exams without any fear. You can also download NCERT Solutions for Class 7 Maths to help you to revise complete syllabus and score more marks in your examinations.

NCERT Solutions for Class 7 Science Chapter 17 Forests Our Lifeline part-1
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FAQ (Frequently Asked Questions)

1. What are the Roles of Plants and Animals in the Regeneration of Forests?

Ans. Forests include different species of plants and animals and these plants and animals are held responsible for the growth and regeneration of forest covers. The animals and microorganisms contribute the utmost in the process of forest regrowth in the following ways:

  • The micro-organisms in the soil help in converting the dead remains of plants and other animals into humus which contributes to the soil fertility and helps in the growth of new plants.

  • Animals living in the forest help in seed dispersal of some plants which helps in the growth of new plants and expands the forest cover.

2. Explain How Forests Help in Maintaining the Oxygen Level in the Environment.

Ans. The plants are generally considered as a natural air purifier. The plants require carbon dioxide to prepare their food. So, they absorb the carbon dioxide released from humans and animals, and in return, plants provide oxygen as an end product of photosynthesis. This oxygen is released into the atmosphere, thereby maintaining a balance of oxygen and carbon dioxide in the atmosphere. The depletion of forest covers from the earth can be harmful as it can reduce the level of oxygen in the atmosphere.