You will get here Science Biology class 12 CBSE notes Chapter 12: Ecosystem. You can connect with us for every important update related to class 12.
Science Biology is a very important subject for you because it will help you increase your percentage as well as it is an important subject for your medical entrance exam. You can score high marks in this subject by studying notes and practicing MCQs. In this post, we will cover Chapter 12: Ecosystem.
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Key Content Of Chapter 12 Ecosystem
12.1 Ecosystem Structure and Function
12.2 Ecosystem Productivity
12.3 Decomposition in Ecosystem
12.4 Energy Flow in Ecosystem
12.5 Ecological Pyramids in Ecosystem
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Class 12 Science Biology Chapter 12: Ecosystem Notes
Ecosystem
Class 12 Biology Chapter 12 – Pulse by Anubhav
Complete Ecosystem notes, NCERT PDF aur latest syllabus yahan easily mil jayega.
Is chapter mein ecosystem structure, energy flow, food chain, decomposition aur ecological pyramids cover kiye gaye hain — exams ke liye highly important 🔥
Class 12 Biology Chapter 12 Ecosystem MCQs
Ecosystem MCQs (Chapter 12) – Pulse by Anubhav
1. An ecosystem is:
A. Interaction of living and non-living components
B. Only plants
C. Only animals
D. Only microbes
2. Which is a terrestrial ecosystem?
A. Pond
B. Lake
C. Forest
D. River
3. Producers in an ecosystem are:
A. Green plants
B. Animals
C. Fungi
D. Bacteria
4. NPP is calculated as:
A. GPP + R
B. GPP – R
C. NPP + GPP
D. R – GPP
5. Decomposition includes:
A. Photosynthesis
B. Breakdown of organic matter
C. Respiration
D. Transpiration
6. Energy flow in ecosystem is:
A. Circular
B. Unidirectional
C. Random
D. Static
7. 10% law is related to:
A. Energy transfer
B. Population growth
C. Respiration
D. Reproduction
8. First trophic level consists of:
A. Producers
B. Consumers
C. Decomposers
D. Carnivores
9. Pyramid of energy is always:
A. Upright
B. Inverted
C. Circular
D. Flat
10. Decomposers are mainly:
A. Plants
B. Animals
C. Bacteria and fungi
D. Birds
Score: 0 / 10
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FAQs About Ecosystem
Ecosystem FAQs (Chapter 12) – Pulse by Anubhav
1. What is an ecosystem?
An ecosystem is a system where living organisms interact with each other and with their physical environment.
2. What are the components of an ecosystem?
It includes biotic components (plants, animals, microbes) and abiotic components (air, water, soil).
3. What is productivity in ecosystem?
Productivity is the rate of biomass production in an ecosystem, mainly by plants.
4. What is decomposition?
Decomposition is the breakdown of dead organic matter into simpler substances by microorganisms.
5. What is energy flow in ecosystem?
Energy flows from sun to producers, then to consumers and decomposers in a unidirectional manner.
6. What is the 10% law?
Only 10% of energy is transferred from one trophic level to the next.
7. What are ecological pyramids?
They represent relationships between organisms in terms of number, biomass, or energy.
Class 12 Biology Notes – All Chapters (Pulse by Anubhav)
| Chapter | Topic | Open |
|---|---|---|
| Chapter I | Sexual Reproduction in Flowering Plants | View → |
| Chapter II | Human Reproduction | View → |
| Chapter III | Reproductive Health | View → |
| Chapter IV | Principles of Inheritance and Variation | View → |
| Chapter V | Molecular Basis of Inheritance | View → |
| Chapter VI | Evolution | View → |
| Chapter VII | Human Health and Disease | View → |
| Chapter VIII | Microbes in Human Welfare | View → |
| Chapter IX | Biotechnology: Principles and Processes | View → |
| Chapter X | Biotechnology and its Applications | View → |
| Chapter XI | Organisms and Populations | View |
| Chapter XII | Ecosystem | View → |
| Chapter XIII | Biodiversity And Conservation | View → |
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