Chapter 14 of 31
Revision Notes
Biosphere (Ecosystem) and Biomes — Revision Notes
Telangana Open School (TOSS) · Class 12 · Geography
Biosphere (Ecosystem) and Biomes revision notes for Telangana Open School (TOSS) Class 12 Geography: 4 topics in quick points.
45 questions30 flashcards5 concepts
Interactive on Super Tutor
Studying Biosphere (Ecosystem) and Biomes? Get the full interactive chapter.
Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for revision notes and more.
Free trial, no card needed.
Key Topics to Revise
1
1. Biosphere and Its Components
- The biosphere includes all regions of Earth's surface, atmosphere, and hydrosphere where life exists.
- It consists of biotic (living) and abiotic (non-living) components that interact continuously.
- Hierarchy of ecological organization: Individual → Population → Community → Ecosystem → Biome → Biosphere.
2
2. Ecosystems and Their Types
- An ecosystem is a community of living organisms interacting with each other and their physical environment.
- Ecosystems are classified into terrestrial and aquatic types based on habitat.
- Terrestrial ecosystems include forests, grasslands, deserts, and tundra.
3
3. Food Chain and Food Web
- A food chain shows a linear transfer of energy from producers to consumers.
- Producers (plants) → Primary consumers (herbivores) → Secondary → Tertiary → Quaternary consumers.
- Decomposers break down dead matter and recycle nutrients.
4
4. Biomes and Their Types
- A biome is a large geographical area with similar climate, flora, and fauna.
- Biomes are classified into terrestrial and aquatic types.
- Major terrestrial biomes: Forests, Grasslands, Deserts, Tundra.
Get complete notes with diagrams and examples
Full NotesKey Concepts
The biosphere is the global ecologicalAn ecosystem consists of a communityA food chain shows a linearA biome is a large geographicalBiodiversity refers to the variety
Frequently Asked Questions
What are the important topics in Biosphere (Ecosystem) and Biomes for Telangana Open School (TOSS) Class 12 Geography?
Key topics in Biosphere (Ecosystem) and Biomes include Biosphere and Its Components, Ecosystems and Their Types, Food Chain and Food Web, Biomes and Their Types. Study these first, then practise questions on each for the Telangana Open School (TOSS) Class 12 board exam.
How should I revise Biosphere (Ecosystem) and Biomes for the Telangana Open School (TOSS) Class 12 board exam?
Learn the core ideas first, then work through the 45 practice questions on Biosphere (Ecosystem) and Biomes. Revise definitions regularly and use flashcards for quick recall before the exam.
Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
More resources for Biosphere (Ecosystem) and Biomes
For serious students
Get the full Biosphere (Ecosystem) and Biomes chapter — start free.
Quizzes, flashcards, an AI doubt solver and a study plan for Telangana Open School (TOSS) Class 12 Geography. Free to start, no card needed.