Environment and Ecosystem
Overview
Environment and Ecosystem is a foundational topic in the Science section of MP TET Varg-2, bridging biology with environmental awareness. Questions typically test your understanding of ecological relationships, energy flow through food chains and webs, types of biodiversity, and the causes and effects of pollution.
This topic carries moderate weightage but is conceptually interconnected with other chapters like Natural Resources and Agriculture. Examiners often frame application-based questions—identifying trophic levels, explaining bioaccumulation, or linking human activities to environmental degradation. Mastery here also supports the pedagogy component, as environmental education is emphasised in NCF 2005 and NEP 2020.
Students must clearly distinguish between related terms (environment vs ecosystem, food chain vs food web), understand energy flow principles, and recognise local examples from Madhya Pradesh's rich biodiversity.
---
Key Concepts
- **Environment** refers to all living (biotic) and non-living (abiotic) factors surrounding an organism, while an **ecosystem** is a functional unit where biotic and abiotic components interact through energy flow and nutrient cycling.
- **Biotic components** include producers (green plants), consumers (herbivores, carnivores, omnivores), and decomposers (bacteria, fungi). **Abiotic components** include sunlight, water, temperature, soil, and air.