NCERT Solutions for Class 7 Science Forest Our Lifeline Question Answers - FREE PDF Download
Struggling to grasp the wonders of the forest our lifeline Class 7 Science? Vedantu's Class 7 Science NCERT Solutions are here to help! Dive deep into the fascinating world of forests, forest products, decomposers, and more with clear explanations that break down complex concepts of class 7 Science chapter 12.
Table of Content
These solutions, aligned with the latest Class 7 Science syllabus, offer a comprehensive understanding of the fundamental principles you'll need throughout your science journey. Don't just memorise facts – unlock true learning and boost your exam confidence by downloading a FREE PDF today!
1. Explain how animals dwelling in the forest help it grow and regenerate.
Ans: Forest animals aid in the dispersal of plant seeds. The seed can be fertilized with animal excrement, and the seedlings can grow into plants. Squirrels, bats, and other animals, for example, contribute to seed dissemination.
2. Explain how forests prevent floods.
Ans: Trees help to safeguard the environment in a variety of ways, one of which is flood protection. Without trees, direct heavy rains can deplete the soil and produce flooding, as well as soil erosion. However, tree roots hold the soil underneath and prevent soil erosion. As a result, trees and forests contribute to the prevention of floods in the natural world.
3. What are decomposers? Name any two of them. What do they do in the forest?
Ans: Decomposers degrade substances for sustenance and nutrition, as the name implies. Decomposers, in general, are microbes that break down dead plants and animals to offer and receive nutrients. Fungi and bacteria are two examples of microorganisms.
4. Explain the role of forests in maintaining the balance between oxygen and carbon dioxide in the atmosphere.
Ans:
Maintaining of Oxygen and Carbon Dioxide in Atmosphere
Plants utilize carbon dioxide for photosynthesis and then release oxygen, as we all know. Animals breathe this oxygen and exhale carbon dioxide. The plants then use carbon dioxide, continuing the cycle. As a result, forests contribute to the maintenance of the oxygen-carbon dioxide balance in the atmosphere.
5. Explain why there is no waste in a forest.
Ans: In forests, everything is reused and repurposed. Decomposers are essential in the decomposition of garbage (dead plants or animals). The decomposed trash can be utilized as fertilizer for the development of trees. As a result, there is no waste in the forest.
6. List five products we get from forests?
Ans: Products we acquire from forests include:
Honey
Rubber
Wood
Medicinal herbs
Oils
7. Fill in the blanks:
Ans:
Herbs from the ground layer in the forest.
A forest is a purifier of air and water.
The decaying leaves and animals dropping in a forest enrich the humus.
The insects, butterflies, honey bees, and birds help flowering plants in pollination.
8. Why should we worry about the conditions and issues related to forests far from us?
Ans: Nature has given trees as the biggest gift to all animals on the earth. They contribute to air filtration and the water cycle's continuation. Forests provide us with a variety of products that we use every day. As a result, we should be concerned about the state of a forest that is far away from us.
9. Explain why there is a need for a variety of animals and plants in a forest.
Ans: It all starts from the food chain. The preservation and survival of a healthy food chain necessitates a diverse range of creatures. Various insects, for example, eat a variety of plants, and those insects are devoured by frogs. The frogs are devoured by snakes, who are eventually eaten by eagles. Everything is interconnected, and each organism has a predator and prey. This is one of several interwoven food chains seen in nature. If one component of the food chain is disrupted, it will have an influence on the others. And a diverse range of plants and animals are required to keep all of these food chains afloat.
10. 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, water table.
Ans:
Atmospheric Components
11. Which of the following is not a forest product?
(i) Gum
(ii) Plywood
(iii) Sealing wax
(iv) Kerosene
Ans: (iv) Kerosene is not a product of the forest. Kerosene is an organic product obtained from the process of distillation of crude oil.
12. 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.
Ans:
(ii) Plants and animals in a forest are not dependent on one another. This is not the right statement as plants and animals are interdependent on each other to fulfill their requirements of growth and development.
13. Microorganisms act upon the dead plants to produce.
(i) Sand
(ii) Mushrooms
(iii) Humus
(iv) Wood
Ans: (iii) Humus. Humus is an organic product formed from leaf litter produced in the soil by the process of microbial decomposition.
Topics Covered in Science Chapter 12 Forest Our Lifeline Class 7
Benefits of NCERT Solution Class 7 Science Chapter 12 Forest Our Lifeline
NCERT Solutions Forest our lifeline answers to every question mentioned in class 7 science chapter 12. Here we have mentioned some benefits of class 7 Science Forest our lifeline:
Comprehensive explanations for each exercise and question, promote a deeper understanding of class 7th science chapter 12 question answers.
Forest Our Lifeline explains the atmosphere and experience of a child exploring the forest for the first time with a new friend to learn more.
Here, you can find the class 7th science chapter 12 question answers related to the importance of forests and the drawbacks of deforestation.
Class 7 science forest our lifeline tells us that a forest is a dense land full of biodiversity and supports the life of various living organisms with a Clear and structured presentation for easy comprehension.
Accurate class 7 science Forest: Our lifeline question answers are aligned with the curriculum, boosting students' confidence in their knowledge.
Students will learn about how deforestation affects the temperature and impacts climate change, helping them understand the climate.
Online accessibility, downloadable resources for class 7 science chapter 12 question answers, and flexible study and revision.
Important Study Material Links for Class 7 Science Chapter 12
Conclusion
The NCERT Solutions for class 7 science Forest Our Lifeline, provided by Vedantu, is a valuable tool for class 7 students. It helps introduce Science concepts in an accessible manner. By using Vedantu's class 7 science Forest our lifeline question answers, Students can better understand NCERT concepts. These solutions are a helpful aid for forest our lifeline class 7 questions with answers, empowering them to excel in their studies and develop a genuine appreciation for the chapter.
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FAQs on NCERT Solutions for Class 7 Science Chapter 12 Forest Our Lifeline
1. What are NCERT Solutions for Class 7 Science Chapter 12 ‘Forest: Our Lifeline’ and why are they important for exam preparation?
NCERT Solutions for Class 7 Science Chapter 12 ‘Forest: Our Lifeline’ provide accurate, stepwise answers to all in-text and end-of-chapter textbook questions. As per CBSE 2025–26 guidelines, these solutions help students understand forest ecosystems, the importance of biodiversity, and forest conservation, boosting confidence for exams by clarifying concepts and correct answer-writing formats.
2. How do animals and plants interact in a forest ecosystem, according to NCERT Class 7 Science Chapter 12?
In a forest ecosystem, plants and animals interact in several ways:
- Animals help in seed dispersal, aiding plant growth and the spread of species.
- Plants provide food and shelter to animals.
- Both are interconnected in various food chains, maintaining ecological balance.
- Decomposers break down dead matter, recycling nutrients back into the soil for plants to absorb.
3. Explain why there is minimal waste in a forest as per NCERT Solutions for Class 7 Science Chapter 12.
Forests have minimal waste because decomposers (like fungi and bacteria) break down dead plants and animals into humus. This humus enriches the soil and supports new plant growth, ensuring recycling of all organic material within the ecosystem as per CBSE curriculum logic for this chapter.
4. What is the role of decomposers in a forest ecosystem according to Class 7 Science NCERT Solutions?
Decomposers (such as fungi and bacteria) break down dead and decaying matter in forests. They:
- Convert dead plants and animals into humus.
- Release nutrients back into the soil for plant use.
- Help maintain the natural nutrient cycle and fertility of the forest.[CBSE-approved explanation]
5. How do forests prevent soil erosion and floods as per NCERT Class 7 Science Chapter 12 solutions?
Forests prevent soil erosion and floods because tree roots bind the soil, making it stable during heavy rains. Canopy cover also reduces the direct impact of rainfall on the soil, helping maintain groundwater levels and preventing floods, as per Class 7 Science NCERT methodology.
6. Why should people care about forests even if they are far from human settlements, according to NCERT Solutions for Class 7 Science Chapter 12?
People should care about forests, even distant ones, because forests:
- Regulate the Earth’s climate and oxygen-carbon dioxide balance.
- Support biodiversity, which affects food chains globally.
- Provide essential resources (medicines, wood, etc.) and ecological services benefiting all life, as highlighted in CBSE Class 7 NCERT Solutions.
7. List five key products that humans obtain from forests, as discussed in Class 7 Science Chapter 12.
Important products obtained from forests include:
- Wood
- Honey
- Medicinal herbs
- Rubber
- Oils (such as eucalyptus oil)
8. How do forests help maintain the oxygen and carbon dioxide balance in the atmosphere?
Forests help maintain the oxygen and carbon dioxide balance by:
- Trees absorb carbon dioxide for photosynthesis and release oxygen.
- Animals breathe oxygen and release carbon dioxide.
- This continuous cycle maintains the atmospheric balance, a key concept in Class 7 NCERT Science.
9. What is humus, and what is its function in the forest ecosystem as per NCERT guidelines?
Humus is the dark, nutrient-rich organic material formed from decomposed plant and animal matter. In forests, it:
- Improves soil fertility.
- Enables better water retention in soil.
- Supports healthy plant growth, supporting the forest’s self-sustaining nature (as per NCERT syllabus for Class 7 Science).
10. Why is biodiversity important in a forest, according to NCERT Solutions for Class 7 Science Chapter 12?
Biodiversity sustains complex food chains and the overall stability of a forest. Different animals and plants provide various ecological functions and resources. If any link breaks, the entire food chain and forest health suffer, as explained in CBSE 2025–26 curriculum for "Forest: Our Lifeline".
11. What would happen if forests disappeared, based on learnings from NCERT Class 7 Science Chapter 12?
If forests disappeared:
- Oxygen levels would decrease, affecting all aerobic life.
- Soil erosion and natural disasters like floods would increase.
- Biodiversity would be lost, resulting in ecosystem collapse.
- Vital resources and climate regulation would be severely impacted, as outlined in NCERT solutions.
12. How are forest layers (canopy, understory, forest floor) different and what are their functions?
The forest canopy is the uppermost layer, formed by leaves and branches, providing shelter and regulating temperature. The understory is below the canopy, consisting of smaller trees and shrubs, offering habitat for different species. The forest floor contains decomposing leaves and organic matter (humus), supporting seed germination and nutrient recycling, as emphasized in class 7 solutions for this chapter.
13. Give one example each of how plants depend on animals and vice versa, as per NCERT Class 7 Science Chapter 12.
Plants depend on animals for pollination and seed dispersal (for example, birds spreading seeds). Animals depend on plants for food and oxygen (herbivores eat plants, all animals need oxygen produced by plants). These interdependencies are key syllabus points for "Forest: Our Lifeline".
14. What are the main threats to forests as discussed in NCERT Solutions for Class 7 Science Chapter 12?
Main threats to forests include:
- Deforestation for agriculture and urban development.
- Illegal logging and over-exploitation of resources.
- Forest fires and climate change impacts.
15. Why are forests called our lifeline as per Class 7 Science curriculum?
Forests are described as our lifeline because they:
- Support life through oxygen production and air purification.
- Regulate climate and rainfall.
- Provide essential resources and habitats for countless species.
