Variety of animals and plants living in forests build a rich biodiversity. Different animals and plants play different role in the system of a forest. For example; herbivores are needed to eat green plants and to provide food for the carnivores. Similarly, carnivores are needed to eat the herbivoresRead more
Variety of animals and plants living in forests build a rich biodiversity. Different animals and plants play different role in the system of a forest. For example; herbivores are needed to eat green plants and to provide food for the carnivores. Similarly, carnivores are needed to eat the herbivores and check their population. This biodiversity make forests more productive, stable and resilient.
If there is no grass, all herbivores would die. If there are no carnivores, all herbivores would eat up all the plants and there is shortage of food. If there are no decomposers, the dead remains of plants and animals would pollute the environment. Due to such biodiversity a balance in nature is maintained.
Forests are very important resources. We should be careful and concerned about the issues related to forest due to following reasons: • If there are no forests, there would be more floods and more soil erosion. • Forests affect the global environment in a great way. For example; reduced forest coverRead more
Forests are very important resources. We should be careful and concerned about the issues related to forest due to following reasons:
• If there are no forests, there would be more floods and more soil erosion.
• Forests affect the global environment in a great way. For example; reduced forest cover in a particular area leads to global warming which affects the whole earth.
• Forests are the dwelling of many animals. Deforestation will endanger our life and environment.
• In the absence of trees and plants, the animals will not get food and shelter.
• Forests provide us large number of useful products including wood, fruits and medicines. These products would not be available in the absence of trees and plants.
The insects, butterflies, honeybees and birds help flowering plants in pollination. https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-17/
The insects, butterflies, honeybees and birds help flowering plants in pollination.
Forests are excellent, perfect and natural recycling factories. All animals, whether herbivores or carnivores, depend ultimately on plants for food. Herbivores eat plants and their products. Carnivores eat herbivores. Dead remains of animals and plants are decomposed by micro-organisms into humus. WRead more
Forests are excellent, perfect and natural recycling factories. All animals, whether herbivores or carnivores, depend ultimately on plants for food. Herbivores eat plants and their products. Carnivores eat herbivores. Dead remains of animals and plants are decomposed by micro-organisms into humus. Whatever is produced in the forest is ultimately utilized by different components of the forest. Forests maintain a network of food chains called food web and hence nothing goes waste in a forest.
Micro-organisms act upon the dead plants to produce
(iii) humus https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-17/
(iii) humus
https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-17/
See lessWhich of the following is not a forest product?
(iv) Kerosene https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-17/
(iv) Kerosene
https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-17/
See lessExplain why there is a need of variety of animals and plants in a forest.
Variety of animals and plants living in forests build a rich biodiversity. Different animals and plants play different role in the system of a forest. For example; herbivores are needed to eat green plants and to provide food for the carnivores. Similarly, carnivores are needed to eat the herbivoresRead more
Variety of animals and plants living in forests build a rich biodiversity. Different animals and plants play different role in the system of a forest. For example; herbivores are needed to eat green plants and to provide food for the carnivores. Similarly, carnivores are needed to eat the herbivores and check their population. This biodiversity make forests more productive, stable and resilient.
If there is no grass, all herbivores would die. If there are no carnivores, all herbivores would eat up all the plants and there is shortage of food. If there are no decomposers, the dead remains of plants and animals would pollute the environment. Due to such biodiversity a balance in nature is maintained.
https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-17/
See lessWhy should we worry about the conditions and issues related to forests far from us?
Forests are very important resources. We should be careful and concerned about the issues related to forest due to following reasons: • If there are no forests, there would be more floods and more soil erosion. • Forests affect the global environment in a great way. For example; reduced forest coverRead more
Forests are very important resources. We should be careful and concerned about the issues related to forest due to following reasons:
• If there are no forests, there would be more floods and more soil erosion.
• Forests affect the global environment in a great way. For example; reduced forest cover in a particular area leads to global warming which affects the whole earth.
• Forests are the dwelling of many animals. Deforestation will endanger our life and environment.
• In the absence of trees and plants, the animals will not get food and shelter.
• Forests provide us large number of useful products including wood, fruits and medicines. These products would not be available in the absence of trees and plants.
https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-17/
See lessFill in the blank: The decaying leaves and animal droppings in a forest enrich the _____________.
The decaying leaves and animal droppings in a forest enrich the soil. https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-17/
The decaying leaves and animal droppings in a forest enrich the soil.
https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-17/
See lessFill in the blank: Herbs form the _____________ layer in the forest.
Herbs form the lowest layer in the forest. https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-17/
Herbs form the lowest layer in the forest.
https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-17/
See lessFill in the blank: A forest is a purifier of _____________ and _____________.
A forest is a purifier of air and water. https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-17/
A forest is a purifier of air and water.
https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-17/
See lessFill in the blank: The insects, butterflies, honeybees and birds help flowering plants in _____________.
The insects, butterflies, honeybees and birds help flowering plants in pollination. https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-17/
The insects, butterflies, honeybees and birds help flowering plants in pollination.
https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-17/
See lessList five products we get from forests?
• Fruits and Vegetables • Timber and wood • Turpentine, latex (rubber raw product) • Spices, resin, gum • Medicines and herbs https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-17/
• Fruits and Vegetables
• Timber and wood
• Turpentine, latex (rubber raw product)
• Spices, resin, gum
• Medicines and herbs
https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-17/
See lessExplain why there is no waste in a forest.
Forests are excellent, perfect and natural recycling factories. All animals, whether herbivores or carnivores, depend ultimately on plants for food. Herbivores eat plants and their products. Carnivores eat herbivores. Dead remains of animals and plants are decomposed by micro-organisms into humus. WRead more
Forests are excellent, perfect and natural recycling factories. All animals, whether herbivores or carnivores, depend ultimately on plants for food. Herbivores eat plants and their products. Carnivores eat herbivores. Dead remains of animals and plants are decomposed by micro-organisms into humus. Whatever is produced in the forest is ultimately utilized by different components of the forest. Forests maintain a network of food chains called food web and hence nothing goes waste in a forest.
https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-17/
See less