forest our lifeline class 7 notes

Overgrazing by cattle should be prevented by providing sufficient pastures in the areas near forests. In this way, a balance of Oxygen and Carbon dioxide is maintained in the atmosphere in forests. All material given in this website is a property of and is for your personal and non-commercial use only. The plants and animals in a forest depend on each other for their survival. Forests are home to many animals and plant species. Forest is a system comprising various plants, animals and micro-organisms. 5. Hence, the air in and around the forest is always fresh and clean. This keeps the soil fertile in the forests and recycles the nutrients. 1. , Therefore, the students will become more environment-conscious and help the world become a better place. It also shows the importance of the forest as a habitat. 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 most important consequence of deforestation is the change in climate. 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. It is a dark coloured substance found in the soil. 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. Forests. Class 7 Science Study Notes Chapter 17 - Forests: Our Lifeline. 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 … 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. It is generally found in tropical forests. Some common animals found in a forest are :- lion, tiger,elephant, monkey, deer, zebra, jackal, bison, boar, … ... Dead and decaying matter enrich the soil of the forest. Solution: Plants in the forests will not allow the rainwater to fall … The decomposers (microorganisms) present on the forest floor decompose the dead plant and animal matter to form fertile soil known as humus. Also, the roots of the plants bind the soil and prevent heavy rainfall always from flowing it away. 1) Forest :- Forest is a natural habitat for many different kinds of plantsand animals. This lecture covers NCERT Science class 7 chapter 17 Forests: Our Lifeline. 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. Explain how forests prevent floods. All right reserved. Tutor log in | Show Topics. The Shrub Layer: It consists of plants small to medium sizes. We know that plants take up carbon dioxide and release oxygen. This layer is formed when trees growing close to each other appear as a roof over the rest of the two floors below. Trees like sal, teak, semal, sheesham, neem, palash, amla, bamboo, khair can be seen in the forest. CBSE Notes - NCERT Solutions - Books. This layer is at a height of 40 m from the ground and receives sunlight in abundance. Firstly, forests are a rich source of oxygen. (b) Interconnected network of food chain forms a food web. Privacy Policy | These plants serve various purposes for the environment as well as human beings. Careers | The forests also absorb loud sounds of the vehicles on the highways nearby and hence prevent noise pollution in the areas around the forest. This group of animals is called. The herbs form the lowest layer of vegetation. When they die, their remains are turned into organic matter by the decomposers. Next Prev Home. The branches on the topmost layer of the tallest trees are known as the emergent layer. The upper part or top of a tree is called its Crown. It is a habitat to enormous forms of wildlife species, such as monkeys, lions, bear, bison, jackal, deer, porcupine, elephant, snake, etc. Things like wood, medicine and various other products, which we obtain from forests, would no longer be available. This is again used by the plants forming a cycle known as the cycle of nutrients.

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