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What is the difference between a grazing...

What is the difference between a grazing food chain and a detritus food chain?

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Given figure represents food chains of a deciduous woodland linked together to form a food web. Which of the following constitute first trophic level of the grazing food chain and the detritus food chain respectively ?

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State the difference between the first trophic levels of detritus food chain and grazing food chain.

State the difference between the first trophic levels of detritus food chain and grazing food chain.

Give two differences between food chain food web.

The food chain ends with

Organisms associated with detritus food chain are

Primary consumers in detritus food chain are

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ICSE-ECOSYSTEMS-PRACTICE QUESTINS (SHORT ANSWER TYPE- II QUESTIONS)
  1. Explain the oxygen cycle in nature.

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  2. What is pyramid of energy? What are its characteristics?

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  3. Give a graphic representation of phosphorus cycle in nature.

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  4. Write a note on pyramid of numbers.

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  5. Briefly enumerate the various types of ecological efficiencies.

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  6. What is 10% law? Describe it in relation to transfer of energy in an e...

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  7. Discuss briefly the abiotic components of an ecosystem.

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  8. Describe pond as an ecosystem.

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  9. Write a short note on trophic levels.

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  10. Define the pyramid of biomass.

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  11. Describe the structural features of an ecosystem.

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  12. What is meant by ecological succession ? Explain how it occurs . W...

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  13. Explain Serarch succession, highlighting the seral communities.

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  14. Explain with the help of two examples, how the pyramid of numbers and ...

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  15. Give differences between seral and climax community during succession.

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  16. Briefly describe the processes and products of decomposition.

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  17. What is nutrient cycling? Write its significance.

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  18. Explain the meaning of 10% law.

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  19. What is the difference between a grazing food chain and a detritus foo...

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  20. Outline salient features of carbon cycling in an ecosystem.

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