Chapters
Chapter 2: Work and Energy
Chapter 3: Current Electricity
Chapter 4: Measurement of Matter
Chapter 5: Acids, Bases and Salts
Chapter 6: Classification of Plants
Chapter 7: Energy Flow in an Ecosystem
Chapter 8: Useful and Harmful Microbes
Chapter 9: Environmental Management
Chapter 10: Information Communication Technology (ICT)
Chapter 11: Reflection of Light
Chapter 12: Study of Sound
Chapter 13: Carbon : An important element
Chapter 14: Substances in Common Use
Chapter 15: Life Processes in Living Organisms
Chapter 16: Heredity and Variation
Chapter 17: Introduction to Biotechnology
Chapter 18: Observing Space : Telescopes
Chapter 7: Energy Flow in an Ecosystem
Balbharati solutions for Science and Technology 9th Standard Maharashtra State Board Chapter 7 Energy Flow in an Ecosystem Exercise [Page 87]
Complete the following table (Carefully study the carbon, oxygen, and nitrogen cycles).
| Bio-geo-chemical cycles | Biotic processes | Abiotic processes |
| 1. Carbon cycle | ||
| 2. Oxygen cycle | ||
| 3. Nitrogen cycle |
Correct and rewrite the following statement and justify your correction.
Carnivores occupy the second trophic level in the food chain.
Correct and rewrite the following statement and justify your correction.
The flow of nutrients in an ecosystem is considered to be a ‘one way’ transport.
Correct and rewrite the following statement and justify your correction.
Plants in an ecosystem are called primary consumers.
Give reason .
Energy flow through an ecosystem is ‘one way’.
Give reason.
Equilibrium is necessary in the various bio-geo-chemical cycles.
Give reason.
Flow of nutrients through an ecosystem is cyclic.
Explain the following cycle in your own words with suitable diagram.
Carbon cycle.
Explain the following cycle in your own words with suitable diagram.
Nitrogen cycle.
Explain the following cycle in your own words with suitable diagram.
Oxygen cycle.
What would you do to help maintain the equilibrium in the various bio-geo-chemical cycles? Explain in brief.
Explain in detail the inter-relationship between the food chain and food web.
State the different types of bio-geochemical cycles and explain the importance of those cycles.
Explain the following with suitable examples.
What type of changes occur in the amount of energy during its transfer from plants to apex consumers?
Explain the following with suitable examples.
What are the differences between flow of matter and of energy in an ecosystem? Why?
Chapter 7: Energy Flow in an Ecosystem
Balbharati solutions for Science and Technology 9th Standard Maharashtra State Board chapter 7 - Energy Flow in an Ecosystem
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Concepts covered in Science and Technology 9th Standard Maharashtra State Board chapter 7 Energy Flow in an Ecosystem are Energy Flow in an Ecosystem, Food Web, Energy Pyramid, The Oxygen Cycle, Biogeochemical Cycle, The Carbon Cycle, Ecosystem, Structure of an Ecosystem, Classification of Animal, Food Chain, Tropic Level, Nitrogen Cycle.
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