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Orgnisms at a higher trophic level have ...

Orgnisms at a higher trophic level have less energy available. Comment.

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Because during energy transfer from lower to higher trophic level , about 90% of energy is lost and only 10% of energy available with a trophic level is trasferred to next trophic level . This is called 10% law.
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The organisms deriving their energy from the same energy source are grouped in same trophic level, while a series of trophic levels showing repeating eating and eaten by is called a food chain. These food chains may be predatory or parasitic or saprophytic chains. In an ecosystem , no food chain is independent . Different food chains are interlinked to form a network called food web. The food webs operate in both aquatic as well as terrestrial ecosystems . Answer the following equations on food chains and food webs : Why do the organisms of a higher torphic level have less energy available than those of a lower trophic level ?

Trophic Levels

Knowledge Check

  • In the figure given alongside, the various trophic levels are shown in the form of a pyramid. At which trophic level the maximum energy is available ?

    A
    `T_(4)`
    B
    `T_(2)`
    C
    `T_(1)`
    D
    `T_(3)`

  • In the given figure, the various trophic levels are shown in a pyramid. At which trophic level is maximum energy available ?

    A
    `T_(4)`
    B
    `T_(2)`
    C
    `T_(1)`
    D
    `T_(3)`

  • Organisms of a higher trophic level which feed on several types of organisms belonging to a number of lower trophic levels constitute the :

    A
    ecosystem
    B
    food web
    C
    ecological pyramid
    D
    food chain

    • Similar Questions

    Explore conceptually related problems

    Construct a terrestrial food chain comprising four trophic levels. (b) What will happen if we kill all the organisms in one trophic level ? (c) Calculate the amount of energy available to the organisms at the fourth trophic level if the energy available to the organisms at the second trophic level is 2000 J.

    At each trophic level the energy value :

    Organisms of a higher trophic level which feed on several types of organisms belonging to a lower trophic level constitute the

    Organisms of a higher trophic level which feed on several types of organisms belonging to a lower trophic level constitute the

    Assertion (A) : In a food chain members of successive higher levels are fewer in number. Reason (R ): Number of organisms at any trophic level depends upon the availability of organisms which serve as food at the lower level.

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