Thanks for visiting our website. CHAPTER - 17Forests : Our lifeline 2. Answer: The animals in … The decomposers (microorganisms) present on the forest floor decompose the dead plant and animal matter to form fertile soil known as humus. Forest is a natural renewable resource. The decaying matter of dead animals, plants and their excreta enables the growth of more plants by providing them with adequate nutrients to grow. askiitians. School Tie-up | Science Important Questions Class 7 are given below. Solution: Plants in the forests will not allow the rainwater to fall … Figure 2: Different Trees found in Forests. Fig. The forests also absorb loud sounds of the vehicles on the highways nearby and hence prevent noise pollution in the areas around the forest. In this article, we will learn Importance of Forest, Why forest is called green lungs? 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. 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 Forest is a habitat of many plants and animals. The fertility of soil is increased by these decomposers. Contact Us | This keeps the soil fertile in the forests and recycles the nutrients. Toll Free No. 1) Forest - Forest is a natural habitat for many. Register Online for NCERT Solutions Class 7 Science tuition on Vedantu.com to score more marks in … Sitemap | CBSE Class 7 Science Chapter 17 Notes Forests: Our Lifeline Forests: Our Lifeline Class 7 Notes Understanding the Lesson. This layer is so dense that very little sunlight penetrates it. Today, forests occupy approximately one- third of the Earth's land area. However, this leads to several ill effects such as: Many animals and plants lose their natural habitat. Chapter 17 Forests Our Lifeline. NCERT Solutions for Class 7. Given below are the links of some of the reference books for class 7 math. Forests also support different food chains because of a complex biodiversity in the forests. They regulate the water cycle on the earth. The Understory: It consists of plants that grow above the forest floor but lower than the canopy. Human beings undergo this process in order to find more space for extending their habitats. They also include non-living or abiotic factors such as sunlight, air, nutrients, water and rocks. This water vapour condenses and forms clouds which lead to increased rainfalls in the area. Fig. Forests are the green lungs and water purifying systems in nature. Karnataka State Syllabus Class 7 Science Chapter 17 Forests: Our Lifeline Class 7 Science Forests: Our Lifeline NCERT Textbook Questions and Answers. As a result, the water table of the area near the forest is high. They help in regulating the amount of Oxygen and Carbon dioxide in the atmosphere. Without a forest cover, the amount of carbon dioxide will increase in the atmosphere which will cause global warming. ... Dead and decaying matter enrich the soil of the forest. Figure 11: Forests Preserve the Water Cycle. The canopy measures from about 20m to 40 meters above the ground. Answer: If trees are not present, rain will hit the ground directly … The process of planting trees in unproductive areas and thereby increasing the forest land on earth is called Deforestation. We have Provided Forests: Our Lifeline Class 7 Science MCQs Questions with Answers to help students understand the concept very well. This rainwater gets into the ground and increases the underground water levels. Figure 7: Forests maintain the amounts of Carbon dioxide and Oxygen in the atmosphere. 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. 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. Construction of dams, highways and clearing of forest to convert them into cultivable land and other residential areas. Educational Study Material. Forests prevent strong winds or dust storm from flowing in the area. Terms & Conditions | All the organisms whether they are plants or animals depend on each other and help each other to survive in the forest. Effects of deforestation. Figure 6: Recycling of Nutrients in Forests. Below the emergent layer is the canopy layer. 1. The roots of the trees … … Awareness and education regarding the importance of forest should be given to people and students. This chain of organisms being dependent on each other for their food is called a Food Chain. 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. In a forest, trees form the uppermost layer, followed by shrubs. For instance, herbivores feed on the plants and carnivores depend upon the herbivores. Animals that feed on dead and decaying plants and animals and convert them into humus are called decomposers. Privacy Policy | Forests provide food and shelter for animals. “Relax, we won’t flood your facebook Question 1. 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. Forest profile: There are different kinds of plants of varied height and size in the forests. The Forests control the flow of water and prevent floods. Here we have covered Important Questions on Forests : Our Lifeline for Class 7 Science subject. A large area of land covered mainly with trees and other plants is called a forest. Extramarks offers NCERT solutions for Forests Our Lifeline of CBSE Class 7. The trees of the forest act as their shelter while a variety of plants and animals are their food. This document is highly rated by Class 7 students and has been viewed 15148 times. 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. The planting of trees in large numbers is called afforestation. 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 1) Forest :- Forest is a natural habitat for many different kinds of plantsand animals. Explain how forests prevent floods. This is again used by the plants forming a cycle known as the cycle of nutrients. 5. different kinds of plants and animals. It is a habitat to enormous forms of wildlife species, such as monkeys, lions, bear, bison, jackal, deer, porcupine, elephant, snake, etc. © 2007-2019 . You can use above books for extra knowledge and practicing different questions. Overgrazing by cattle should be prevented by providing sufficient pastures in the areas near forests. 3. Forests. Revision Notes on Heat Woollen clothes are... About Us | Due to growing human population, vast tracts of forest have been removed. Humus is made from dead and decaying organisms. Careers | This layer is formed when trees growing close to each other appear as a roof over the rest of the two floors below. 2. The upper part or top of a tree is called its Crown. This layer of forests is home to rabbits, snakes, frigs, earthworms, fungi termite and insects. Explain how forests prevent floods. Different organisms present on the earth are dependent on each other. Forest. Fig. Register Now. Illegal poaching and hunting of animals must be prevented. This group of animals is called. The nutrients present in the soil are used by plants, insects and microorganisms. In this way, forests allow a regulated supply of water to the nearby streams. Afforestation helps in increasing the forest land and thus helps in improving the environment of the Earth. Forests are home to many animals and plant species. Show Topics. 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. This layer of a forest starts from the foot of trees and grows up to 20 metres from the ground. This layer requires the most sunlight. Shrubs, herbs and grasses are also found in … Hence the plants in the forests provide oxygen to the animals and their animals provide carbon dioxide to the plants. There are different kinds of trees found in the forest such as Neem, bamboo, Sheesham, fig, sal, amla and teak. The decomposers decay the dead matter in the forest and support the growth of plants. They prevent air, water, land and noise pollutions in some or the other way. Forest Can You Identify Trees by looking at these leaves? Free online notes for Class 7 Science – Forest – Our Lifeline. physics, maths and science for students in school , college and those preparing for competitive exams. 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. Not only this, forests form a complete ecosystem that includes various living organisms such as trees, shrubs, plants, microorganisms, wild animals and birds. It is always exposed to sunlight. The energy from the plants enters the consumers in the form of food. A forest is an area or a part of the land that is covered with trees and a wide variety of plants. The microorganisms live upon the decaying matter and convert it to humus. The space between the canopy and the forest floor is known as the Understorey. These people are dependent upon the forest for food, water, shelter and medicines. Class 6 - Class 7 - Class 8 - Class 9 Class 10 - Class 11 - Class 12. 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 … The plants and animals in a forest depend on each other for their survival. Not only this, forests form a complete ecosystem that includes various living organisms such as trees, shrubs, plants, microorganisms, wild animals and birds. The Canopy: It consists of the tree crowns. The most important consequence of deforestation is the change in climate. It met all our requirements for leading a normal life at that time. FAQ's | Steps must be taken to create awareness about the hazards of deforestation and preserving the rich source of forests. CBSE Class 7 Science Notes Chapter 17 Forests: Our Lifeline In ancient times, we used to live in forests. Plants and animal in the forest. The herbivores are dependent on the plants for their food. The Class 7 Chapter 17 Science Forest: Our Lifeline Is about the condition of the forest lands in our country. A jackal, a porcupine, an elephant . Class 7 Biology Forests: Our Lifeline. Answer: Boars, bison, jackals, porcupines, elephants, etc., live in the deeper areas of the forest. People and students should be encouraged to plant more trees through programs like 'Vanmahotsava'. Media Coverage | Hence, the air in and around the forest is always fresh and clean. Parts of a … The areas surrounding the forests generally have a cool climate and receive a good amount of rainfall. Pay Now | NCERT Solutions Class 7 Science Chapter 17 Forests: Our Lifeline. 1. Class 7 Science Notes Chapter 17 Forests Our Lifeline PDF ... Class 7 Science Notes. Also, the roots of the plants bind the soil and prevent heavy rainfall always from flowing it away. They are usually less in number in the forests. Search - Question Answers 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. 4. 3. 1800-102-5301 They prevent global warming by keeping the air clean as they take in all the carbon dioxide. It will also create a better future for the … Introduction. Forests can absorb a lot of water. Here you can get Class 7 Important Questions Science based on NCERT Text book for Class VII. CBSE Class 7 - Science - CH17 - Forests: Our Lifeline (MCQs) Forests: Our Lifeline. Plants are autotrophs, so also called, Living things that eat other organisms as food are called heterotrophs. Deforestation and its Effect: Large scale cutting of trees to clear land for human use is called deforestation. Forests: Our Lifeline 7th Class NCERT CBSE Science Chapter 17 Question: List some animals which live in deeper areas of the forest. Some common animals found in a forest are :- lion, tiger,elephant, monkey, deer, zebra, jackal, bison, boar, … news feed!”. The forest floor provides favourable conditions for seeds to germinate and develop into seedlings and saplings. The type of animals and kind of trees differ from forest to forest. Dear With no plants and trees to hold the soil together, the soil gets washed away by strong winds and flowing water. 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. This is because the plants and trees prevent the rainwater from directly flowing away. All right reserved. Forest is a system comprising various plants, animals and micro-organisms. Without any trees, the water cycle gets disturbed and the soil dries out. Tutor log in | Stratification is defined as dividing a natural habitat into several layers depending upon the heights of plants or vegetation of that area. It is generally found in tropical forests. (b) Interconnected network of food chain forms a food web. The number of layers a forest has depends upon the climate, temperature, availability of light, type of soils and rainfall. This is a reason why forests are called Green Lungs. It has gotten 4319 views and also has 4.8 rating. Trees like sal, teak, semal, sheesham, neem, palash, amla, bamboo, khair can be seen in the forest. using askIItians. Forest our lifeline class 7 notes also states the role of forests in various sectors of nature. This will eventually lead to extinction of different species. Forests look green because tree tops form a green cover over the land in the forest. The branches on the topmost layer of the tallest trees are known as the emergent layer. The need for timber and medicinal plants, resulting in illegal logging and smuggling of the precious forest products. This lecture covers NCERT Science class 7 chapter 17 Forests: Our Lifeline. It is a dark coloured substance found in the soil. In this process, the water is released as water vapour in the atmosphere. All material given in this website is a property of physicscatalyst.com and is for your personal and non-commercial use only. There are different kinds of forests present on the earth depending upon the geographical and climatic conditions of a particular region. It also leads to several benefits that the forests provide us. Preparing for entrance exams? Many birds, insects and a few animals such as leopards and sloth bears live here. Refund Policy. The soil is moist and water containing decaying leaves, fruits and animal matter. 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 … MCQ Questions for Class 7 Science with Answers were prepared based on the latest exam pattern. 6. 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. Explain how forests prevent floods. Therefore, the students will become more environment-conscious and help the world become a better place. Forest is a system comprising various plants, animals and microorganisms. Eagles, butterflies, bats and certain types of monkeys live here. This layer is at a height of 40 m from the ground and receives sunlight in abundance. Along with trees, there are different herbs, shrubs, climbers, creepers, grasses and plants found in the forest. Complete JEE Main/Advanced Course and Test Series, Complete AIPMT/AIIMS Course and Test Series. 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. Study CBSE notes & practice Forests question answers to score high in school exams. These plants serve various purposes for the environment as well as human beings. The herbs form the lowest layer of vegetation. CBSE Notes - NCERT Solutions - Books. Forests provide favourable environmental conditions, food and shelter to a variety of wild animals, insects and microorganisms. 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. Forests act as a natural absorber and allow the rainwater to seep into the earth. Class 7 Science Study Notes Chapter 17 - Forests: Our Lifeline. 2. PLEASE READ MY DISCLOSURE FOR MORE INFO. Yes, people from different tribes live in forests. 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. Lack of awareness in people about the importance of forests. This is called Canopy. Hence forests are called Dynamic Living Entity. Sal tree. The Herb Layer: It consists of plants without woody stem those grow above the ground such as grasses. A forest is an area with a high density of trees. (c) Animals excreta pollute forest soil. They require less amount of light in order to grow. Yet, as explained above, Forest's assertion that the incident took place in front of the entire class is an overstatement. 1. 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. Explain how animals dwelling in the forest help it grow and regenerate. Illegal logging of trees for timber must be prevented. We know that plants take up carbon dioxide and release oxygen. 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. The Emergent Layer: It consists of the topmost layer of trees. Overgrazing in forest by cattle from nearby villages. 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. Next Prev Home. Hence deforestation results in loss of biodiversity. When they die, their remains are turned into organic matter by the decomposers. Register and Get connected with our counsellors. PDF Download Free. Construction of resorts in and around forests, leading to their destruction. NCERT Solutions of Forests: Our Lifeline 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. Being unable to find a suitable environment to live, they may die or become extinct eventually. Directly flowing away tree is called a food chain forms a food web in climate conditions, food shelter... On forests: Our Lifeline being unable to find a suitable environment to in. 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