Biosphere
Gujarat Board · Class 11 · Geography
Quick revision notes for Biosphere — Gujarat Board Class 11 Geography. Key concepts, formulas, and definitions for last-minute revision.
Key Topics to Revise
Basic Concepts of Biosphere
- Biosphere is the sphere where life exists on Earth and in the atmosphere around it
- It includes all living organisms: humans, microorganisms, insects, animals, birds, and vegetation
- Extends up to 26 km in altitude and several km below Earth's surface
Types of Ecosystems
- Two major types: Terrestrial and Aquatic ecosystems
- Terrestrial ecosystem includes grasslands, arid regions, deserts, islands
- Aquatic ecosystem includes pond, lake, watershed, river, river delta, sea
Biogeochemical Cycles
- Transformation of abiotic elements into biotic elements and vice versa
- Vegetation absorbs chemical elements through roots and converts to biotic elements
- Elements transferred through food chain to different organisms
Food Chain and Energy Flow
- Energy flow: Sunshine → Green plants → Herbivores → Carnivores → Decomposers
- Green plants are primary producers (autotrophs) - produce energy from sunshine
- Herbivores are primary consumers (cow, buffalo, deer)
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What are the important topics in Biosphere for Gujarat Board Class 11 Geography?
Biosphere covers several key topics that are frequently asked in Gujarat Board Class 11 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
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