NCERT Solutions for Class 7 Science Chapter 17
Important NCERT Questions
7th Chapter 17 Forests: Our Lifeline
NCERT Books for Session 2022-2023
CBSE Board and State Board
Questions No: 9
Explain why there is a need of variety of animals and plants in a forest.
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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.
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A diverse array of animals and plants in forests is essential. Various species contribute uniquely to the ecosystem’s stability, ensuring resilience against changes. They aid in nutrient cycling, maintaining soil fertility and supporting plant growth. Diverse species facilitate pollination, seed dispersal, and complex food webs, crucial for forest regeneration and sustaining life cycles. Moreover, forests’ biodiversity offers medicinal resources and genetic diversity, enhancing adaptability. Overall, the variety of life in forests is vital, sustaining ecosystems, supporting life, and providing resources for human well-being.