Class 10 Science Chapter 13 – Our Environment
Understand ecosystems, food chains, and environmental issues with simple explanations and exam-focused content.
Get Class 10 Science Chapter 13 Our Environment notes, important questions, diagrams, and exam-ready answers designed to help you understand environmental concepts clearly and perform well in exams.
This chapter explains ecosystems, food chains, food webs, biodegradable and non-biodegradable substances, and environmental problems like pollution and waste management.
This is an easy and scoring chapter if concepts are understood properly. Questions are usually theory-based and concept-oriented.
👉 These Class 10 Science Chapter 13 notes are structured for quick revision and better understanding.
👉 This chapter is easy to score with proper understanding and revision.
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🎯 What You Will Learn in This Chapter
✔ Ecosystem and its components
✔ Food chain and food web
✔ Biodegradable and non-biodegradable substances
✔ Environmental problems
Estimated Time to Complete
Concept Learning: 2–2.5 hours
Practice: 1–1.5 hours
Revision: 30 minutes
👉 Total: ~3–4 hours
📊 Difficulty Level
⭐ Easy
🌱 Concept-based
⚡ How to Study This Chapter Efficiently
✔ Understand food chains clearly
✔ Learn definitions
✔ Focus on diagrams
✔ Revise examples
🧪 Key Concepts Explained (With Examples)
🔹 Ecosystem
Interaction between living and non-living components.
📌 Example: Forest
🔹 Food Chain
Transfer of energy from one organism to another.
📌 Example:
Grass → Deer → Tiger
🔹 Food Web
Network of interconnected food chains.
🔹 Biodegradable Substances
Can be decomposed by microorganisms.
📌 Example: Food waste
🔹 Non-Biodegradable Substances
Cannot be decomposed easily.
📌 Example: Plastic
🌍 Where This Chapter is Used in Real Life
🌱 Environmental protection
♻ Waste management
🌍 Ecosystem balance
🚯 Pollution control
🎯 What to Focus (Exam Priority)
🔴 Must Do
✔ Food chain
✔ Biodegradable vs non-biodegradable
✔ Ecosystem
🟡 Important
✔ Food web
✔ Environmental issues
🟢 Quick Revision
✔ Definitions
✔ Examples
👉 If you focus on these topics, you can easily score 5–7 marks from this chapter.
📊 Most Important Questions (HIGH PRIORITY)
✔ What is ecosystem
✔ Explain food chain
✔ Difference between biodegradable and non-biodegradable
✔ Environmental issues
These are only selected important questions. Get full chapter-wise important questions with answers and exam patterns using Smart Study Tool.
🧠 Exam Writing Format (VERY IMPORTANT)
🔹 Structure to Follow
✔ Definition
✔ Explanation
✔ Example
✔ Diagram (if needed)
🔹 Marks Strategy
👉 1 Mark → Definition
👉 2–3 Marks → Definition + example
👉 5 Marks → Explanation + example
🔹 Presentation Tips
✔ Use bullet points
✔ Write clear definitions
✔ Add examples
👉 “All content is designed for instant online access — no downloads required”
Common Mistakes to avoid
❌ Confusing food chain and food web
❌ Writing incomplete definitions
❌ Not giving examples
⚡ Quick Revision (1-Minute Recap)
✔ Ecosystem = interaction
✔ Food chain = energy flow
✔ Food web = network
✔ Biodegradable = decomposable
For full scoring answer with explanation, use Smart Answer Tool.
Education Hub (Bharat) is part of Multitigo — a platform focused on free tools and smart learning solutions to help students study faster and perform better.
🎯 Confidence Boost
👉 This chapter can easily give 5–7 marks in exams
Quick Test (Try Yourself)
👉 What is the difference between food chain and food web?
👉 Want step-by-step solutions and full question bank? Unlock Smart Study Tool.
🔥 Most Important Questions (Based on Previous Years)
🔹 Question 1
Explain food chain
🎯 3 marks
🔹 Question 2
What are biodegradable substances
🎯 2–3 marks
🔹 Question 3
Explain ecosystem
🎯 5 marks
Most students skip these questions — don’t make that mistake.
These questions are commonly used by teachers in tests and exams.
🧠 Try Before You See the Answer
👉 Attempt these questions yourself first
✔ Improves understanding
✔ Builds confidence
🏁 Challenge Yourself
👉 If you can solve these questions, you are already ahead of most students.
🚀 Want to Score Above 90%?
👉 If you can solve these questions without help:
✔ Revise definitions
✔ Practice examples
✔ Understand concepts
👉 This level of preparation can help you achieve top scores in exams
🤖 Want Detailed Answers?
👉 Use our upcoming AI tool to:
✔ Generate step-by-step answers
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Exam Writing Tips
✔ Write definitions clearly
✔ Add examples
✔ Keep answers structured
Concept Focus (Must Practice)
✔ Food chain vs food web
✔ Ecosystem components
✔ Environmental impact
✍️ How to Write Answers in Exam
🔹 Example 1 (2–3 Marks)
Q: What is ecosystem?
✅ Answer:
Ecosystem is the interaction between living and non-living components.
🔹 Example 2 (3 Marks)
Q: What is food chain?
✅ Answer:
Food chain is the transfer of energy from one organism to another.
👉 Example: Grass → Deer → Tiger
🔹 Example 3 (3–5 Marks)
Q: Explain biodegradable substances
✅ Answer:
Biodegradable substances can be decomposed by microorganisms.
👉 Example: Food waste
🔹 Example 4 (5 Marks)
Q: Explain food web
✅ Answer:
Food web is a network of interconnected food chains.
👉 Helps maintain ecological balance
Education Hub (Bharat) is part of Multitigo — a platform focused on free tools and smart learning solutions to help students study faster and perform better.
📊 Your Progress
You have completed Chapter 13
🎉 You completed Class 10 Science
Continue Your Learning
More Chapters in Class 10 Science
Previous Chapters
Chapter 1 – Chemical Reactions
Chapter 2 – Acids, Bases and Salts
Chapter 3 – Metals and Non Metals
Chapter 4 – Carbon and Its Compound
Chapter 5 – Life Processes
Chapter 6 – Control and Coordination
Chapter 7 – How do Organisms Reproduce
Chapter 8 – Heredity and Evolution
Chapter 9 – Light Reflection and Refraction
Chapter 10 – Human Eye and Colorful World
Chapter 11 – Electricity
Chapter 12 – Magnetic Effects of Electric Current
View All Chapters – Click Given Below
Explore Class 10 Social Science
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FAQs
1. What is ecosystem?
Interaction of living and non-living components
2. What is food chain?
Energy transfer
3. What is food web?
Network of food chains
4. What is biodegradable?
Decomposable
5. Why is this chapter important?
Easy scoring
Education Hub (Bharat) is part of Multitigo — a platform focused on free tools and smart learning solutions to help students study faster and perform better.