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Revision Notes
Ecosystem — Revision Notes
MHT-CET · Biology
Quick revision notes for Ecosystem — key concepts, formulas, and definitions for MHT-CET Biology preparation.
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Key concepts, formulas, and definitions from Ecosystem for MHT-CET Biology preparation.
Key Topics to Revise
1
Ecosystem Structure and Components
- Ecosystem is an open system that receives solar energy input and shows unidirectional energy flow
- Biotic components include producers (autotrophs), consumers (heterotrophs), and decomposers (reducers)
- Abiotic components include light, temperature, wind, soil, and water
2
Productivity in Ecosystems
- Productivity is the rate of biomass production per unit area over time, expressed as kcal m⁻² yr⁻¹ or gm⁻² yr⁻¹
- Primary productivity: Amount of organic matter produced by plants during photosynthesis
- GPP: Total rate of organic matter production during photosynthesis
3
Decomposition Process
- Decomposition: Physical and chemical breakdown of detritus into inorganic substances
- Detritus: Dead plant and animal remains including fecal matter
- Above-ground detritus: Leaf litter, dried plant parts, animal remains
4
Energy Flow and Food Chains
- Sun is the ultimate source of energy for all ecosystems (except deep-sea hydrothermal)
- Only <50% of solar radiation is Photosynthetically Active Radiation (PAR)
- Plants capture only 2-10% of PAR for photosynthesis
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Key Concepts
Ecosystems consist of biotic components (producersPrimary productivity measures the rate atDecomposition breaks down dead organic matterEnergy flows unidirectionally from sunFood webs are interconnected networks
Frequently Asked Questions
What topics are covered in Ecosystem for MHT-CET?
Ecosystem is an important chapter in MHT-CET Biology. It covers key concepts and formulas that are frequently tested in the exam. Key topics include: Ecosystem Structure and Components, Productivity in Ecosystems, Decomposition Process, Energy Flow and Food Chains.
How important is Ecosystem for MHT-CET?
Ecosystem is a frequently tested chapter in MHT-CET Biology. Questions from this chapter appear regularly in previous year papers. There are 97 practice questions available for this chapter.
How to prepare Ecosystem for MHT-CET?
Start by understanding the core concepts, then solve practice questions. Focus on formulas and their applications. Use revision notes for quick review before the exam.
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