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Syllabus

Biosphere (Ecosystem) and Biomes — Syllabus

Telangana Open School (TOSS) · Class 12 · Geography

What Biosphere (Ecosystem) and Biomes covers in Telangana Open School (TOSS) Class 12 Geography: 4 topics, for the 2026-27 session.

45 questions30 flashcards5 concepts

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4 Topics · Telangana Open School (TOSS) Class 12 Geography · 2026-27

Topics in Biosphere (Ecosystem) and Biomes

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.

Key Concepts

Central concept: Biosphere

EcologyEcosystemBiomeBiodiversity

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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.

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All Telangana Open School (TOSS) Class 12 Geography Syllabus

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