Explain why there is no waste in a forest

Solution: Forests are considered to be ideal, and completely natural recycling factories. We are aware of the fact that whether they are herbivores or carnivores, all animals essentially rely on plants for nourishment. Every ecosystem has a number of food chains. Nothing is wasted in a forest because of the network of food chains known as the food web. Plants and their products are consumed by herbivores. Herbivores are eaten by carnivores. And when they die, microorganisms decompose dead anddecaying plant and animal material to create humus which eventually supports plant growth. Everything that is produced in the forest is ultimately used by various forest elements so we can say that it is devoid of any waste.

NCERT Solutions for Class 7 Science Chapter 17 Forests Our Lifeline Topics and Sub Topics in Class 7 Science Chapter 17 Forests Our Lifeline: Section Name Topic Name 17 Forests: Our Lifeline 17.1 Visit to a Forest Q.1. Explain how animals dwelling in the forest help it grow and regenerate. Ans. Animals help in growing and regenerating forests in many ways. Animals work as the cleaning agents in the forest. Microorganisms work on dead bodies of plants and animals and degenerate them. An’imals also help in pollination which helps in growing a number of plants. Herbivores helps the carnivores to grow as they serve as food for them. Thus flora and fauna mutually grow in the forest. Q.2. Explain how forests prevent floods. Ans. Forests can absorb a lot of water. The roots of the trees absorb the water and prevent it from flowing away. Roots of trees also help in percolation of water into the soil. This helps in preventing floods. Q.3. What are decomposers? Name any two of them. What do they do in the forest? Ans. Decomposers are the organisms which feed on the dead bodies of plants and animals. They clean the forests decaying dead bodies and replenishing the nutrients back to the forest soil, e.g.„ beetles and grubs. Q.4. Explain the role of forest in maintaining the balance between oxygen and carbon dioxide in the atmosphere. Ans. Plants release oxygen in the atmosphere during the process of photosynthesis. This oxygen is inhaled by the animals for respiration. During respirat...

Hint: Forest forms most of the hydrological cycle of the Earth as it has the maximum organic matter living there including both plants and animals. They exist in an interdependent life, which helps them to co-exist. They get their every requirement fulfilled from the forest itself. The food chain also prevails there. Complete answer: A waste in the forest is formed by the plants and animals die. When they die, the organic matter of their body starts to decompose. The microorganisms act on them to decompose them. This will convert the organic matter into manure or humus. The manure is used to fertilize the soil and it also provides nutrients and minerals to the plants that are grown on that soil. In a forest due to an ample number of animals, they decompose to give a huge amount of manure. This will fertilize a huge part of the land by the action of microorganisms. Hence, the plants grown will have fertile soil to grow. Thus this whole cycle does not lead to any kind of waste in nature. This whole balance helps to utilize all kinds of resources in nature. The forests maintain the ecological balance in nature. Note: A forest covers a large area on a land. 70% of animals live in the forests. We need forests for the survival of mankind as they help in the gaseous cycle of nature. They provide mankind with various needs like wood, medicine, habitat etc. They help prevent soil erosion and climatic change.

NCERT Solutions for Class 7 Science Chapter 17 Forests Our Lifeline Topics and Sub Topics in Class 7 Science Chapter 17 Forests Our Lifeline: Section Name Topic Name 17 Forests: Our Lifeline 17.1 Visit to a Forest Q.1. Explain how animals dwelling in the forest help it grow and regenerate. Ans. Animals help in growing and regenerating forests in many ways. Animals work as the cleaning agents in the forest. Microorganisms work on dead bodies of plants and animals and degenerate them. An’imals also help in pollination which helps in growing a number of plants. Herbivores helps the carnivores to grow as they serve as food for them. Thus flora and fauna mutually grow in the forest. Q.2. Explain how forests prevent floods. Ans. Forests can absorb a lot of water. The roots of the trees absorb the water and prevent it from flowing away. Roots of trees also help in percolation of water into the soil. This helps in preventing floods. Q.3. What are decomposers? Name any two of them. What do they do in the forest? Ans. Decomposers are the organisms which feed on the dead bodies of plants and animals. They clean the forests decaying dead bodies and replenishing the nutrients back to the forest soil, e.g.„ beetles and grubs. Q.4. Explain the role of forest in maintaining the balance between oxygen and carbon dioxide in the atmosphere. Ans. Plants release oxygen in the atmosphere during the process of photosynthesis. This oxygen is inhaled by the animals for respiration. During respirat...

Hint: Some microorganisms, but not always, carry out certain tasks of breaking down of material. These organisms are bacteria,fungi, someinsects, worms, andsnails. Complete Step by Step Answer: The process of food consumption by different organisms in the forest leads to no wastage. Let’s see how it is done. The energy is achieved in the form of food in the ecosystem. The topmost source of this energy is the sun and producers like green plants trap solar energy to convert it into the chemical energy for getting their food. The primary producer is then eaten by the primary consumer; this is again eaten by a secondary consumer. This secondary consumer may be eaten by a tertiary consumer, and so on. The food chain is made up of this link from producers and ending at apex predator species or decomposer species. The dead plant parts, animal excreta, and animal dead bodies are decomposed by the organisms known as decomposers. They degrade the forest organic waste by converting the waste into hummus or nutrients for the soil which in turn is used by plants for fertility. By this process, the forest doesn't contain any waste materials. Note: WinterFungus eats dead tree trunks. Not always the decomposers break down dead things; they also feed on decaying tissue while it's still on aliving organism. More than 300 million people live in the forest and 70% of the world’s animals depend on forests for their homes. The rainforests plants give us the medicines that we use; more than 25% ...

Solution: Forests are considered to be ideal, and completely natural recycling factories. We are aware of the fact that whether they are herbivores or carnivores, all animals essentially rely on plants for nourishment. Every ecosystem has a number of food chains. Nothing is wasted in a forest because of the network of food chains known as the food web. Plants and their products are consumed by herbivores. Herbivores are eaten by carnivores. And when they die, microorganisms decompose dead anddecaying plant and animal material to create humus which eventually supports plant growth. Everything that is produced in the forest is ultimately used by various forest elements so we can say that it is devoid of any waste.

Solution: Forests are considered to be ideal, and completely natural recycling factories. We are aware of the fact that whether they are herbivores or carnivores, all animals essentially rely on plants for nourishment. Every ecosystem has a number of food chains. Nothing is wasted in a forest because of the network of food chains known as the food web. Plants and their products are consumed by herbivores. Herbivores are eaten by carnivores. And when they die, microorganisms decompose dead anddecaying plant and animal material to create humus which eventually supports plant growth. Everything that is produced in the forest is ultimately used by various forest elements so we can say that it is devoid of any waste.

NCERT Solutions for Class 7 Science Chapter 17 Forests Our Lifeline Topics and Sub Topics in Class 7 Science Chapter 17 Forests Our Lifeline: Section Name Topic Name 17 Forests: Our Lifeline 17.1 Visit to a Forest Q.1. Explain how animals dwelling in the forest help it grow and regenerate. Ans. Animals help in growing and regenerating forests in many ways. Animals work as the cleaning agents in the forest. Microorganisms work on dead bodies of plants and animals and degenerate them. An’imals also help in pollination which helps in growing a number of plants. Herbivores helps the carnivores to grow as they serve as food for them. Thus flora and fauna mutually grow in the forest. Q.2. Explain how forests prevent floods. Ans. Forests can absorb a lot of water. The roots of the trees absorb the water and prevent it from flowing away. Roots of trees also help in percolation of water into the soil. This helps in preventing floods. Q.3. What are decomposers? Name any two of them. What do they do in the forest? Ans. Decomposers are the organisms which feed on the dead bodies of plants and animals. They clean the forests decaying dead bodies and replenishing the nutrients back to the forest soil, e.g.„ beetles and grubs. Q.4. Explain the role of forest in maintaining the balance between oxygen and carbon dioxide in the atmosphere. Ans. Plants release oxygen in the atmosphere during the process of photosynthesis. This oxygen is inhaled by the animals for respiration. During respirat...

Hint: Forest forms most of the hydrological cycle of the Earth as it has the maximum organic matter living there including both plants and animals. They exist in an interdependent life, which helps them to co-exist. They get their every requirement fulfilled from the forest itself. The food chain also prevails there. Complete answer: A waste in the forest is formed by the plants and animals die. When they die, the organic matter of their body starts to decompose. The microorganisms act on them to decompose them. This will convert the organic matter into manure or humus. The manure is used to fertilize the soil and it also provides nutrients and minerals to the plants that are grown on that soil. In a forest due to an ample number of animals, they decompose to give a huge amount of manure. This will fertilize a huge part of the land by the action of microorganisms. Hence, the plants grown will have fertile soil to grow. Thus this whole cycle does not lead to any kind of waste in nature. This whole balance helps to utilize all kinds of resources in nature. The forests maintain the ecological balance in nature. Note: A forest covers a large area on a land. 70% of animals live in the forests. We need forests for the survival of mankind as they help in the gaseous cycle of nature. They provide mankind with various needs like wood, medicine, habitat etc. They help prevent soil erosion and climatic change.

Hint: Forest forms most of the hydrological cycle of the Earth as it has the maximum organic matter living there including both plants and animals. They exist in an interdependent life, which helps them to co-exist. They get their every requirement fulfilled from the forest itself. The food chain also prevails there. Complete answer: A waste in the forest is formed by the plants and animals die. When they die, the organic matter of their body starts to decompose. The microorganisms act on them to decompose them. This will convert the organic matter into manure or humus. The manure is used to fertilize the soil and it also provides nutrients and minerals to the plants that are grown on that soil. In a forest due to an ample number of animals, they decompose to give a huge amount of manure. This will fertilize a huge part of the land by the action of microorganisms. Hence, the plants grown will have fertile soil to grow. Thus this whole cycle does not lead to any kind of waste in nature. This whole balance helps to utilize all kinds of resources in nature. The forests maintain the ecological balance in nature. Note: A forest covers a large area on a land. 70% of animals live in the forests. We need forests for the survival of mankind as they help in the gaseous cycle of nature. They provide mankind with various needs like wood, medicine, habitat etc. They help prevent soil erosion and climatic change.