Chapter 7 of 18
Syllabus
Energy Flow in an Ecosystem — Syllabus
Maharashtra Board · Class 9 · Science
What Energy Flow in an Ecosystem covers in Maharashtra Board Class 9 Science: 4 topics, for the 2026-27 session.
45 questions22 flashcards5 concepts
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4 Topics · Maharashtra Board Class 9 Science · 2026-27
Topics in Energy Flow in an Ecosystem
1
Food Chains and Food Webs
- Food chain is a definite sequence of interactions between producers, consumers, and saprophytes
- Each chain consists of 4-5 or more links representing different trophic levels
- Food web is an intricate network formed by interconnected food chains at various levels
2
Energy Pyramid and Trophic Levels
- Energy and matter gradually decrease from producers to top consumers
- Energy pyramid shows the pattern of energy exchange in ecosystems
- Also called Eltonian Pyramid after Charles Elton (1927)
3
Bio-geo-chemical Cycles
- Cyclical flow of nutrients within ecosystems through biotic and abiotic factors
- Operates through biosphere (lithosphere + atmosphere + hydrosphere)
- Two types: Gaseous cycles and Sedimentary cycles
4
Carbon Cycle
- Circulation and recycling of carbon from atmosphere to living organisms and back
- Main processes: Photosynthesis and Respiration
- Plants convert CO₂ to carbohydrates through photosynthesis
Key Concepts
A food chain is a linearTrophic levels are the different feedingThese are the cyclical pathways throughCarbon moves through the atmosphereOxygen is produced by plants during
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What are the important topics in Energy Flow in an Ecosystem for Maharashtra Board Class 9 Science?
Key topics in Energy Flow in an Ecosystem include Food Chains and Food Webs, Energy Pyramid and Trophic Levels, Bio-geo-chemical Cycles, Carbon Cycle. Study these first, then practise questions on each for Class 9 exams.
How should I revise Energy Flow in an Ecosystem for Class 9 exams?
Learn the core ideas first, then work through the 45 practice questions on Energy Flow in an Ecosystem. Revise definitions regularly and use flashcards for quick recall before the exam.
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Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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