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Transfer of food energy in oranisms in a...

Transfer of food energy in oranisms in an ecosystem through a series of repeated eating and being eaten.

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food chain
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The diagram shows the flow of energy through an ecosystem. Which arrows represent the smallest amount of energy transferred between organisms and the largest amount of energy lost to the ecosystem?

Correct the statement if required Energy enters this ecosystem through consumers.

Read the given statements and select the correct option regarding this. (i) Ecosystem services provided by nature to human beings such as oxygen for respiration, asesthetic value, etc. (ii) Direct economic benefits derived from nature by human beings such as food, medicine, etc. (iii) Every species has an intrinsic value, even if it is not of any economic use to us. With respect to above give codes (i), (ii) and (iii) choose the correct option.

10% energy transfer law in food chain was first given by

Is there any transfer of energy through the medium when a stationary wave is produced in it?

Assertion: The loss of biologically useful energy as heat with every energy transfer in a food chain is a consequence of the second law of thermodynamics. Reason: Energy does not remain trapped permanetly in any organism. It is either passed on to higher trophic level or becomes available to detritivores and decomposers after the organism dies.

Study the following statements and select the incorrect ones. (i) Pyramids of energy and yearly biomass production can never be inverted, since this would violate the laws of thermodynamics. (ii) Pyramids of standing crop and numbers can be inverted, since the number of organisms at a time does not indicate the amount of energy flowing through the system. (iii) There are certain limitations of ecological pyramids such as they do not take into account the same species belonging to two or more trophic levels. (iv) Saprohytes are not given any place in ecological pyramids even though they play a vital role in the ecosystem.

Energy transfer from one trophic level to other in a food chain is :

I coulomb of charge passes through solution of AgNO_3 and CuSO_4 connected in series and the concentration of two solution being in the ratio 1:2. The ratio of amount of Ag and Cu deposited on Pt. electrode is :

MBD PUBLICATION-ECOSYSTEMS-QUESTION BANK
  1. An integral system resulting from interaction of living organisms and ...

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  2. The total amount of living matter present in the individual organism. ...

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  3. Transfer of food energy in oranisms in an ecosystem through a series o...

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  4. A transitional zone between the sea and river.

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  5. Study of the relation between agricultural crops and environment.

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  6. Inhibition of growth of one organism by another organism.

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  7. Plants growing on acidic soil are called.

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  8. Plants growing on rocks and stones.

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  9. The communities as a whole interact with the physical environment to f...

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  10. The effects resulting from vital activities of plants and animals cons...

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  11. In sun plants the chloroplasts are arranged against vertical walls of ...

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  12. The stomata which remain closed during day-time and open at night is c...

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  13. Injury to plant cells due to ice crystal formation is calledinjury.

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  14. is the ratio of real humidity and humidity which the air can hold at s...

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  15. Structure, composition and characteristics of soil together constitute...

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  16. Study of community is called.

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  17. The two stages of soil formation are weathering of rocks followed by .

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  18. A condition in which there may be plenty of water in soil but a plant ...

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  19. Forests, grasslands and deserts belong to ecosystem.

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  20. Each step in a food chain represents a level.

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