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Extinction of a species in a food chain ...

Extinction of a species in a food chain is compensated by:

A

food web

B

food chain and decomposers

C

ecological pyramid

D

none of these

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The correct Answer is:
A
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Food chains are very important for the survival of most species. When only one element is removed from the food chain it can result in extinction of a species in some cases. The foundation of the food chain consists of primary producers Primary producers, or autotrophs, can use either solar energy or chemical energy to create complex organic compounds, whereas species at higher trophic levels cannot and so must consume producers or other life that itself consumes producers. Because the sun's light is necessary for photosynthesis, most life could not exist if the sun disappeared. Even so, it has recently been discovered that there are some forms of life, chemotrophs, that appear to gain all their metabolic energy from chemosythesis driven by hydrothermal vents, thus showing that some life may not require solar energy to thrive. Mr. X is eating curd/yogurt. For this food intake in a food chain he should be considered as occupying

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GRB PUBLICATION-ECOSYSTEM -EXEMPLAR PROBLEMS
  1. Extinction of a species in a food chain is compensated by:

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  2. Decomposers like fungi and bacteria are: i. autotrophs ii. heter...

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  3. The process of mineralisation by microorganisms helps in the relase of

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  4. Productivity is the rate of production of biomass expressed in terms o...

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  5. An inverted pyramid of biomass can be found in which ecosystem?

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  6. Which of the following is not a producer?

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  7. Which of the following ecosystems is most productive in terms of net p...

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  8. Pyramid of numbers is

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  9. Approximately how much of the solar energy that falls on the leaves of...

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  10. Among the following where do you think the process of decomposition wo...

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  11. How much of the net primary productivity of a terrestrial ecosystem is...

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  12. During the process of ecological succession, the changes that take pla...

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  13. Climax community is in a state of

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  14. Among the following biogeochemical cycles, which one does not have los...

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  15. The sequence of communities of primary succession in water is

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  16. The reservoir for the gaseous type of bio-geo chemical cycle exists in...

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  17. If the carbon atoms fixed by producers already have passed through thr...

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  18. Which of the following type of ecosystem is expected in an area where ...

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  19. The zone at the edge of a lake or ocean which is alternatively exposed...

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  20. Edaphic factor refers to

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  21. Which of the following is an ecosystem service provided by a natural e...

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