Four out of these, the Sunderbans in the West Bengal, Nanda Devi in Uttaranchal, the Gulf of Mannar in Tamil Nadu and the Nilgiris (Kerala, Karnataka and Tamil Nadu) have been included Can You Identify Trees by looking at these leaves? The Forests control the flow of water and prevent floods. They require less amount of light in order to grow. This layer is so dense that very little sunlight penetrates it. Hence forests are called Dynamic Living Entity. The type of animals and kind of trees differ from forest to forest. NCERT Solutions of Forests: Our Lifeline Class 7 The Canopy: It consists of the tree crowns. Forests provide food and shelter for animals. Forest our lifeline class 7 notes also states the role of forests in various sectors of nature. 2. Careers | These plants serve various purposes for the environment as well as human beings. This rainwater gets into the ground and increases the underground water levels. They prevent air, water, land and noise pollutions in some or the other way. It can lead to increased floods as the trees will no longer be there to regulate a steady flow of water. Yet, as explained above, Forest's assertion that the incident took place in front of the entire class is an overstatement. Complete JEE Main/Advanced Course and Test Series, Complete AIPMT/AIIMS Course and Test Series. Contact Us | Here we have covered Important Questions on Forests : Our Lifeline for Class 7 Science subject. Plants such as orchids, vines, palms and ferns grow in this region. When they die, their remains are turned into organic matter by the decomposers. There are different kinds of forests present on the earth depending upon the geographical and climatic conditions of a particular region. PDF Download Free. CBSE Notes - NCERT Solutions - Books. They are a rich source of different products that are used by human beings: Raw materials for different industries like paper, wood etc. Chapter 17 Forests Our Lifeline. The canopy measures from about 20m to 40 meters above the ground. This is because the plants and trees prevent the rainwater from directly flowing away. Solution: Plants in the forests will not allow the rainwater to fall … Next Prev Home. Forest is a system comprising various plants, animals and micro-organisms. Revision Notes on Heat Woollen clothes are... About Us | It will also create a better future for the … Parts of a … A large area of land covered mainly with trees and other plants is called a forest. This is a reason why forests are called Green Lungs. CBSE Class 7 Science Notes Chapter 17 Forests: Our Lifeline In ancient times, we used to live in forests. In this way, a balance of Oxygen and Carbon dioxide is maintained in the atmosphere in forests. 4. The NCERT Solutions to the questions after every unit of NCERT textbooks aimed at helping students solving difficult questions.. For a better understanding of this … different kinds of plants and animals. It is always exposed to sunlight. Also, the roots of the plants bind the soil and prevent heavy rainfall always from flowing it away. Thanks for visiting our website. The energy from the plants enters the consumers in the form of food. This water vapour condenses and forms clouds which lead to increased rainfalls in the area. This chain of organisms being dependent on each other for their food is called a Food Chain. They regulate the water cycle on the earth. Filed Under: Class 7, Forests Our Lifeline, Science About Mrs Shilpi Nagpal Author of this website, Mrs Shilpi Nagpal is MSc (Hons, Chemistry) and BSc (Hons, Chemistry) from Delhi University, B.Ed (I. P. University) and has many years of experience in teaching. The forest floor provides favourable conditions for seeds to germinate and develop into seedlings and saplings. Forests also support different food chains because of a complex biodiversity in the forests. This is again used by the plants forming a cycle known as the cycle of nutrients. Below the emergent layer is the canopy layer. Many birds, insects and a few animals such as leopards and sloth bears live here. The forests also absorb loud sounds of the vehicles on the highways nearby and hence prevent noise pollution in the areas around the forest. Forests: Our Lifeline Class 7 Science Notes - Chapter 17 Deforestation Clearing of forests and trees eventually using that land for other purposes like agriculture and other human activities. Without any trees, the water cycle gets disturbed and the soil dries out. It has an abundance of food; hence, it is a dwelling place for many birds, insects and monkeys. → Control forest fires → Promote afforestation → Do not allow overgrazing → Protect wildlife → Social forestry → Establishment of national parks and bio-reserves. Here you can get Class 7 Important Questions Science based on NCERT Text book for Class VII. Study CBSE notes & practice Forests question answers to score high in school exams. Animals will lose their natural habitat and they might even die. Explain how animals dwelling in the forest help it grow and regenerate. Forests act as a natural absorber and allow the rainwater to seep into the earth. The trees of the forest act as their shelter while a variety of plants and animals are their food. In this article, we will learn Importance of Forest, Why forest is called green lungs? Franchisee | Forest Fig. The process of planting trees in unproductive areas and thereby increasing the forest land on earth is called Deforestation. The herbivores are dependent on the plants for their food. Register and Get connected with our counsellors. Our aim is to help students learn subjects like A forest is an area with a high density of trees. The most important consequence of deforestation is the change in climate. Use Coupon: CART20 and get 20% off on all online Study Material, Complete Your Registration (Step 2 of 2 ), Free webinar on Robotics (Block Chain) Learn to create a Robotic Device Using Arduino. The planting of trees in large numbers is called afforestation. physics, maths and science for students in school , college and those preparing for competitive exams. DISCLOSURE: THIS PAGE MAY CONTAIN AFFILIATE LINKS, MEANING I GET A COMMISSION IF YOU DECIDE TO MAKE A PURCHASE THROUGH MY LINKS, AT NO COST TO YOU. All the organisms whether they are plants or animals depend on each other and help each other to survive in the forest. It will lead to increased air pollution as trees are the ones that can absorb greenhouse gases such as carbon dioxide and increase the oxygen content in the atmosphere. 2. news feed!”. Figure 9: How Forests Prevent Soil Erosion. The nutrients present in the soil are used by plants, insects and microorganisms. Media Coverage | Refund Policy. It brings out the importance of forests in our life, and it also depicts the effects of forest depletion on the environment and human lives. Vertical line test for functions and relation, Trigonometry Formulas for class 11 (PDF download), Science Foundation Course For JEE/NEET/NSO/Olympiad - Class 7, CBSE All In One Science Class 7 by Arihant Experts (Author), IIT Foundation Physics, Chemistry & Maths for Class 7. Generally, the trees of a forest are divided into following sections: The Forest Floor: It comprises of the shed leaves, stems, bark and the top layer of soil. Revision Notes on Light What is light? Figure 11: Forests Preserve the Water Cycle. All animals are heterotrophs, so also called, Some animals eat only plants, such animals are called, When animals die, their bodies are eaten by crows, vultures and hyenas. Animals And Their Habitat: Fourteen biosphere reserves have been set up in the country to protect flora and fauna. ... Dead and decaying matter enrich the soil of the forest. Human beings undergo this process in order to find more space for extending their habitats. Answer: The animals in … All material given in this website is a property of physicscatalyst.com and is for your personal and non-commercial use only. Class 7 Science Study Notes Chapter 17 - Forests: Our Lifeline. Blog | Register Now. (c) Animals excreta pollute forest soil. askiitians. Firstly, forests are a rich source of oxygen. Explain how forests prevent floods. Eagles, butterflies, bats and certain types of monkeys live here. People and students should be encouraged to plant more trees through programs like 'Vanmahotsava'. Ans. The microorganisms live upon the decaying matter and convert it to humus. This eventually ends up at the decomposers and is released into the soil. Shrubs, herbs and grasses are also found in … Awareness and education regarding the importance of forest should be given to people and students. Explain how forests prevent floods. As a result, the water table of the area near the forest is high. Filed Under: Class 7, Forests Our Lifeline, Science About Mrs Shilpi Nagpal Author of this website, Mrs Shilpi Nagpal is MSc (Hons, Chemistry) and BSc (Hons, Chemistry) from Delhi University, B.Ed (I. P. University) and has many years of experience in teaching. The decaying matter of dead animals, plants and their excreta enables the growth of more plants by providing them with adequate nutrients to grow. Effects of deforestation. Tutor log in | Forest is a habitat of many plants and animals. Forests : Our Lifeline - NCERT Solution, Class 7 Science Class 7 Notes | EduRev notes for Class 7 is made by best teachers who have written some of the best books of Class 7. FAQ's | Toll Free No. Forest – Our Lifeline Class 7 Science – Importance of Forest – Our Lifeline. Forests serve various purposes for human beings as well as nature hence they are an important resource. Register yourself for the free demo class from Explain how forests prevent floods. Answer: Boars, bison, jackals, porcupines, elephants, etc., live in the deeper areas of the forest. Dear Plants are autotrophs, so also called, Living things that eat other organisms as food are called heterotrophs. PLEASE READ MY DISCLOSURE FOR MORE INFO. Question 1. The Class 7 Chapter 17 Science Forest: Our Lifeline Is about the condition of the forest lands in our country. 1800-102-5301 The carnivores are dependent on the herbivores. CBSE Class 7 Science Chapter 17 Notes Forests: Our Lifeline Forests: Our Lifeline Class 7 Notes Understanding the Lesson. A jackal, a porcupine, an elephant . In a forest, trees form the uppermost layer, followed by shrubs. Steps must be taken to create awareness about the hazards of deforestation and preserving the rich source of forests. NCERT Solutions Class 7 Science Chapter 17 Forests: Our Lifeline. School Tie-up | Forests can absorb a lot of water. Fig. This layer of a forest starts from the foot of trees and grows up to 20 metres from the ground. Fig. Today, forests occupy approximately one- third of the Earth's land area. The Emergent Layer: It consists of the topmost layer of trees. Illegal poaching and hunting of animals must be prevented. Hence, they also prevent soil erosion. Yes, people from different tribes live in forests. This layer of forests is home to rabbits, snakes, frigs, earthworms, fungi termite and insects. Poaching and hunting of animals for their meat, skin and bones causing a decrease in the number of animals and disturbance in the food chain. Forests look green because tree tops form a green cover over the land in the forest. Forests are the green lungs and water purifying systems in nature. Forest profile: There are different kinds of plants of varied height and size in the forests. Hence the plants in the forests provide oxygen to the animals and their animals provide carbon dioxide to the plants. , The decomposers (microorganisms) present on the forest floor decompose the dead plant and animal matter to form fertile soil known as humus. There is no need to plant trees in the forest as the forests provide favourable environmental conditions to plants so that they can germinate and grow on their own. They also include non-living or abiotic factors such as sunlight, air, nutrients, water and rocks. 1. CHAPTER - 17Forests : Our lifeline 2. In this process, the water is released as water vapour in the atmosphere. There are different kinds of trees found in the forest such as Neem, bamboo, Sheesham, fig, sal, amla and teak. Class 7 Science Notes Chapter 17 Forests Our Lifeline PDF ... Class 7 Science Notes. 1. Check the below NCERT MCQ Questions for Class 7 Science Chapter 17 Forests: Our Lifeline with Answers Pdf free download. Afforestation helps in increasing the forest land and thus helps in improving the environment of the Earth. Stratification is defined as dividing a natural habitat into several layers depending upon the heights of plants or vegetation of that area. The plants and animals in a forest depend on each other for their survival. It is a habitat to enormous forms of wildlife species, such as monkeys, lions, bear, bison, jackal, deer, porcupine, elephant, snake, etc. Construction of resorts in and around forests, leading to their destruction. Science Important Questions Class 7 are given below. Forests. Extramarks offers NCERT solutions for Forests Our Lifeline of CBSE Class 7. Not only this, forests form a complete ecosystem that includes various living organisms such as trees, shrubs, plants, microorganisms, wild animals and birds. Animals that feed on dead and decaying plants and animals and convert them into humus are called decomposers. Learn to Create a Robotic Device Using Arduino in the Free Webinar. It is a dark coloured substance found in the soil. These people are dependent upon the forest for food, water, shelter and medicines. The Understory: It consists of plants that grow above the forest floor but lower than the canopy. The soil is moist and water containing decaying leaves, fruits and animal matter. The Herb Layer: It consists of plants without woody stem those grow above the ground such as grasses. In the forest different trees grow tall together and their branches appear as the roof of the forest as no sky is visible through these trees. 1) Forest - Forest is a natural habitat for many. Forest also argues that the officers omitted crucial facts from the affidavit, particularly that the alleged assault took place in front of the entire class and the teaching assistant. MCQ Questions for Class 7 Science with Answers were prepared based on the latest exam pattern. NCERT Solutions for Class 7. This layer requires the most sunlight. It’s an easier way as well. For instance, herbivores feed on the plants and carnivores depend upon the herbivores. It has gotten 4319 views and also has 4.8 rating. Forests are home to many animals and plant species. Deforestation and its Effect: Large scale cutting of trees to clear land for human use is called deforestation. This keeps the soil fertile in the forests and recycles the nutrients. All right reserved. This layer is formed when trees growing close to each other appear as a roof over the rest of the two floors below. The areas surrounding the forests generally have a cool climate and receive a good amount of rainfall. The space between the canopy and the forest floor is known as the Understorey. This group of animals is called. Here on AglaSem Schools, you can access to NCERT Book Solutions in free pdf for Science for Class 7 so that you can refer them as and when required. Forests: Our Lifeline 7th Class NCERT CBSE Science Chapter 17 Question: List some animals which live in deeper areas of the forest. Show Topics. Forests prevent strong winds or dust storm from flowing in the area. Pay Now | Forest is a system comprising various plants, animals and microorganisms. Illegal logging of trees for timber must be prevented. Without a forest cover, the amount of carbon dioxide will increase in the atmosphere which will cause global warming. Figure 2: Different Trees found in Forests. Plants and animal in the forest. Due to growing human population, vast tracts of forest have been removed. Sitemap | It also leads to several benefits that the forests provide us. Forest is a natural renewable resource. Hence deforestation results in loss of biodiversity. “Relax, we won’t flood your facebook Hence, the air in and around the forest is always fresh and clean. This is called Canopy. Overgrazing in forest by cattle from nearby villages. Register Online for NCERT Solutions Class 7 Science tuition on Vedantu.com to score more marks in … The number of layers a forest has depends upon the climate, temperature, availability of light, type of soils and rainfall. Trees should be planted in wastelands where the forest cover is disappearing. Preparing for entrance exams? The herbs form the lowest layer of vegetation. Answer: If trees are not present, rain will hit the ground directly … The Shrub Layer: It consists of plants small to medium sizes. Science Class 7 Important Questions are very helpful to score high marks in board exams. They are usually less in number in the forests. They help in regulating the amount of Oxygen and Carbon dioxide in the atmosphere. Class 7 Biology Forests: Our Lifeline. Given below are the links of some of the reference books for class 7 math. Forest. It also shows the importance of the forest as a habitat. … Some grow up into trees. 1) Forest :- Forest is a natural habitat for many different kinds of plantsand animals. RD Sharma Solutions | Environment of forest is peaceful and cool breeze blows. You can use above books for extra knowledge and practicing different questions. We know that plants get rid of an excess of water through the process of transpiration. A forest is an area or a part of the land that is covered with trees and a wide variety of plants. The fertility of soil is increased by these decomposers. Fig. Jackals, porcupine, elephants, boar live deep in the forest. CBSE Class 7 - Science - CH17 - Forests: Our Lifeline (MCQs) Forests: Our Lifeline. Karnataka State Syllabus Class 7 Science Chapter 17 Forests: Our Lifeline Class 7 Science Forests: Our Lifeline NCERT Textbook Questions and Answers. Terms & Conditions | subject notes on class 7 science forest our lifeline. This allows minimization of competition among the animals and allows them to survive easily. It met all our requirements for leading a normal life at that time. Forests: Our Lifeline - Chapter Wise CBSE Solved Question and Answer Based On NCERT Short Q&A: Q1: Discuss the role of forest in maintaining the balance between oxygen and carbon dioxide in … (b) Interconnected network of food chain forms a food web. We know that plants take up carbon dioxide and release oxygen. Forest is the habitat of several animals and plants. The decomposers decay the dead matter in the forest and support the growth of plants. Construction of dams, highways and clearing of forest to convert them into cultivable land and other residential areas. Along with trees, there are different herbs, shrubs, climbers, creepers, grasses and plants found in the forest. Jan 16, 2021 - Chapter 17: Forest: our Lifeline - PowerPoint Presentation, Science Class 7 Notes | EduRev is made by best teachers of Class 7. It is generally found in tropical forests. Therefore, the students will become more environment-conscious and help the world become a better place. The branches on the topmost layer of the tallest trees are known as the emergent layer. Demolishing the forest on a large scale is called Deforestation. However, this leads to several ill effects such as: Many animals and plants lose their natural habitat. Not only this, forests form a complete ecosystem that includes various living organisms such as trees, shrubs, plants, microorganisms, wild animals and birds. 3. This document is highly rated by Class 7 students and has been viewed 15148 times. Signing up with Facebook allows you to connect with friends and classmates already 6. Being unable to find a suitable environment to live, they may die or become extinct eventually. Sal tree. Free PDF download of Class 7 Science Chapter 17 - Forests: Our Lifeline Revision Notes & Short Key-notes prepared by expert Science teachers from latest edition of CBSE(NCERT) books. Lack of awareness in people about the importance of forests. Search - Question Answers Figure 7: Forests maintain the amounts of Carbon dioxide and Oxygen in the atmosphere. We have Provided Forests: Our Lifeline Class 7 Science MCQs Questions with Answers to help students understand the concept very well. Privacy Policy | 3. This layer is at a height of 40 m from the ground and receives sunlight in abundance. Figure 6: Recycling of Nutrients in Forests. They prevent global warming by keeping the air clean as they take in all the carbon dioxide. Hence forests increase the water vapour content in the atmosphere. One of our academic counsellors will contact you within 1 working day. Now-a-days, we live in cities and towns far off from forests, so we really do not know the importance of forests in our life. The need for timber and medicinal plants, resulting in illegal logging and smuggling of the precious forest products. Forests are a natural habitat of a wide variety of animals and plants. Things like wood, medicine and various other products, which we obtain from forests, would no longer be available. Different organisms present on the earth are dependent on each other. Forests provide favourable environmental conditions, food and shelter to a variety of wild animals, insects and microorganisms. Humus is made from dead and decaying organisms. Free online notes for Class 7 Science – Forest – Our Lifeline. Forests are a home to a variety of insects and microorganisms because the soil of the forest is highly fertile and therefore it provides favourable living conditions such as water and nutrients to these organisms. With no plants and trees to hold the soil together, the soil gets washed away by strong winds and flowing water. The bodies of dead plants and animals get broken down into simpler substances or are decomposed by decomposers like fungi and bacteria present in the soil. Introduction. Trees like sal, teak, semal, sheesham, neem, palash, amla, bamboo, khair can be seen in the forest. The roots of the trees … Overgrazing by cattle should be prevented by providing sufficient pastures in the areas near forests. 1. The upper part or top of a tree is called its Crown. In this way, forests allow a regulated supply of water to the nearby streams. This lecture covers NCERT Science class 7 chapter 17 Forests: Our Lifeline. This will eventually lead to extinction of different species. 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