Ecosystem — Class 12 Biology NCERT Solutions (Free)
Free step-by-step NCERT solutions for Class 12 Biology chapter "Ecosystem" — 8 important questions with detailed answers for CBSE board exam preparation.
TL;DR: Free step-by-step NCERT solutions for Class 12 Biology chapter "Ecosystem" — 8 important questions with detailed answers for CBSE board exam preparati…
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Key Questions Covered:
- Define an ecosystem. What are its main components?
- Explain energy flow in ecosystems. What is the 10% law?
- Describe nutrient cycling. Explain the carbon cycle and nitrogen cycle.
- + 5 more questions in the full chapter
Solutions Summary:
| Question | Status |
|---|---|
| Define an ecosystem. What are its main components? | ✓ Solved |
| Explain energy flow in ecosystems. What is the 10% law? | ✓ Solved |
| Describe nutrient cycling. Explain the carbon cycle and n… | ✓ Solved |
Showing 3 of 8 questions
Q1: Define an ecosystem. What are its main components?
An ecosystem is a functional unit of nature comprising all living organisms (biotic components) and their physical environment (abiotic components) interacting together through energy flow and nutrient cycling.
MAIN COMPONENTS:
BIOTIC COMPONENTS:
1. Producers (Autotrophs)
- Green plants, photos...
Q2: Explain energy flow in ecosystems. What is the 10% law?
Energy flow is the movement of energy through an ecosystem from sun through organisms to environment as heat. It is unidirectional and decreases at each level.
Q3: Describe nutrient cycling. Explain the carbon cycle and nitrogen cycle.
Nutrient cycling (biogeochemical cycles) involves circular movement of nutrients between biotic and abiotic components of ecosystem. Nutrients are recycled indefinitely.
Showing 3 of 8 questions. Visit the full page for complete solutions.