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Given below is a flow chart showing the ...

Given below is a flow chart showing the accumulation of DDT in different trophic levels.
(a) Name the phenomenon.
(b) How does it affect bird population?

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(a) Biomagnification ,
(b) Biomagnification of DDT in the food chain decreases the birds population as DDT interferes the shell formation. The shells remain thin - walled . So the eggs rupture during incubation of eggs by the birds.
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MODERN PUBLICATION-ECOSYSTEM -REVISION EXERCISES (III. SHORT ANSWER TYPE - I QUESTIONS) (A. QUESTIONS FROM STATE BOARD EXAMINATIONS)
  1. Differentiate between production and decomposition.

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  2. Define productivity . Mention the two types of productivity.

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  3. What is ecological pyramid ? Draw the pyramid of numbers.

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  4. Write a short note on ecological succession on a bare rock.

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  5. Differentiate between primary and secondary succession. Provide one ex...

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  6. Why is pyramid of biomass in sea generally inverted ? Explain.

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  7. How do climatic factors affect process of decomposition in ecosystem ?...

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  8. Under what circumstances doe the secondary succession begin ? Why does...

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  9. The different stages of primary succession in water are represented be...

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  10. Briefly explain the ecological pyramid which is always upright.

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  11. The products of ecosystem processeare named as ecosystem services . Li...

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  12. Pyramid of energy is never been inverted . Why ?

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  13. What is gross primary productivity ? In what unit is it expressed ?

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  14. Give a brief account of productivity .

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  15. Write a short note on energy flow.

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  16. Describe briefly detritus food chain

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  17. What is ecosystem ? Explain its two components .

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  18. Starting from a bare rock or the site of volcanic eruptions, trace the...

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  19. (a) Identify the type of ecological pyramid given below . (b) Pyrami...

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  20. Given below is a flow chart showing the accumulation of DDT in differe...

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