NCERT Solutions Class 7 Science Chapter 17 - Forests: Our lifeline
NCERT Solutions for Class 7 Science Chapter 17, titled "Forests: Our Lifeline," are presented as an engaging resource to help students comprehend the content of this chapter effectively. Expert teachers have crafted these solutions in a unique manner, making it easier for students to grasp the concepts and prepare for examinations.
Access Answers to NCERT Solutions Class 7 Science Chapter 17 - Forests: Our lifeline
Students can access the NCERT Solutions Class 7 Science Chapter 17 - Forests: Our lifeline. Curated by experts according to the CBSE syllabus for 2023–2024, these step-by-step solutions make Science much easier to understand and learn for the students. These solutions can be used in practice by students to attain skills in solving problems, reinforce important learning objectives, and be well-prepared for tests.
Forests: Our Lifeline
What are decomposers? Name any two of them. What do they do in the forest?
The micro-organisms which convert dead plants and animals to humus are known as decomposers. For example, bacteria and fungi. They help in the recycling of nutrients by decomposing dead plants and animals.
Explain the role of forests in maintaining the balance between oxygen and carbon dioxide in the atmosphere.
Plants in the forests consume carbon dioxide and release oxygen through the photosynthesis process. This helps in balancing oxygen and carbon dioxide in the atmosphere.
Explain why there is no waste in a forest.
There is no waste in a forest because the waste created is bio-degradable, which gets converted to humus by the action of microorganisms.
List five products we get from forests.
The five products we get from forests are listed below:
i) Medicines
ii) Spices
iii) Wood
iv) Paper
v) Gum
Explain how animals dwelling in the forest help it grow and regenerate.
Animals dwelling in the forest help it grow and regenerate in the following ways:
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Animals help in dispersing plant seeds.
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Decaying animal dung provides nutrients for plants to grow
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Microorganisms convert the dead plants and animals to humus
Explain how forests prevent floods.
Plants in the forests will not allow the rainwater to fall directly on the earth, and these plants also hold water which helps in preventing floods.
Fill in the blanks:
(a) The insects, butterflies, honeybees and birds help flowering plants in _______.
(b) A forest is a purifier of ________ and ________.
(c) Herbs form the ________ layer in the forest.
(d) The decaying leaves and animal droppings in a forest enrich the ________.
(a) The insects, butterflies, honeybees and birds help flowering plants in pollination.
(b) A forest is a purifier of air and water.
(c) Herbs form the lowest layer in the forest.
(d) The decaying leaves and animal droppings in a forest enrich the soil.
Why should we worry about the conditions and issues related to forests far from us?
We should worry about the forest for the following reasons:
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A decrease in forests results in an increase in carbon dioxide content in the atmosphere. This results in global warming.
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Depletion of forests results in soil erosion
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The decrease in forests adversely affects the lives of animals living in the forest.
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The absence of forests leads to flooding more often.
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Due to the reduction of forests, the land will turn barren, which is called desertification.
Explain why there is a need for a variety of animals and plants in a forest.
A variety of plants and animals in the forests helps plants to regenerate and grow. A wide range of plants supports herbivores, which in turn serve as food for carnivores. Decomposers turn dead animals and plants into humus, thereby maintaining nutrient recycling. This wide variety makes the forest a dynamic living entity.
In Fig. 17.15, the artist has forgotten to put the labels and directions on the arrows. Mark the directions on the arrows and label the diagram using the following labels: clouds, rain, atmosphere, carbon dioxide, oxygen, plants, animals, soil, roots, and water table.
Which of the following is not a forest product?
(i) Gum
(ii) Plywood
(iii) Sealing wax
(iv) Kerosene
(iv) Kerosene
Which of the following statements is not correct?
(i) Forests protect the soil from erosion.
(ii) Plants and animals in a forest are not dependent on one another.
(iii) Forests influence the climate and water cycle.
(iv) Soil helps forests to grow and regenerate.
(ii) Plants and animals in a forest are not dependent on one another.
Micro-organisms act upon the dead plants to produce
(i) sand
(ii) mushrooms
(iii) humus
(iv) wood
(iii) humus
Frequently Asked Questions
The NCERT solution for Class 7 Chapter 17: Forests: Our lifeline is important as it provides a structured approach to learning, ensuring that students develop a strong understanding of foundational concepts early in their academic journey. By mastering these basics, students can build confidence and readiness for tackling more difficult concepts in their further education.
Yes, the NCERT solution for Class 7 Chapter 17: Forests: Our lifeline is quite useful for students in preparing for their exams. The solutions are simple, clear, and concise allowing students to understand them better. They can solve the practice questions and exercises that allow them to get exam-ready in no time.
You can get all the NCERT solutions for Class 7 Science Chapter 17 from the official website of the Orchids International School. These solutions are tailored by subject matter experts and are very easy to understand.
Yes, students must practice all the questions provided in the NCERT solution for Class 7 Science Chapter 17: Forests: Our lifeline as it will help them gain a comprehensive understanding of the concept, identify their weak areas, and strengthen their preparation.
Students can utilize the NCERT solution for Class 7 Science Chapter 17 effectively by practicing the solutions regularly. Solve the exercises and practice questions given in the solution.