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Why are food chains limited to 4-5 tropic levels?

Why are food chains limited to 4-5 tropic levels?<br/>

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This question is part of IB Biology Chapter 4: Ecology
Asked by Videosbym, Last updated: Feb 26, 2019

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3 Answers

C. Matz

Traveler and writer by profession.

C. MatzCollege student, Graduation, Orlando
College student, Graduation, Orlando

Answered on Jul 18, 2019

The correct answer to this question is energy loss. As each level is progressed through, the organism on the scale will lose any energy that may have been gained from the previous trophic. Wasted material and life processes are the cause of energy loss. There are seven of them, and MRS GREN is how one can remember them.

M stands for movement, R, for respiration, S for sensitivity, G for growth, R for reproduction, E for excretion, and N for nutrition. All of these are reasons why, throughout the food chain, energy is wasted away and lost. If there were more than four, energy from all the tropics would be lost, and there would be no point to the food chain.

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J. Harty

Have keen interest in writing, traveller by heart.

J. HartyWriter, M.A, Chula Vista
Writer, M.A, Chula Vista

Answered on Feb 26, 2019

Food chains are limited to 4-5 trophic levels because energy losses between trophic levels restrict the length of food chains and the biomass of higher trophic levels. The energy added to the biomass by each successive trophic level is less than the one before, and is therefore reduced further in each successive trophic level.

Most of the energy in food that is digested and absorbed by organisms in a trophic level is later released in respiration for use in cell activities; It is therefore lost as heat. The organisms in a trophic level are not usually entirely consumed by organisms in the next trophic level.

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videosbym

Videosbym

Answered on Nov 19, 2017

Energy losses between trophic levels restrict the length of food chains and the biomass of higher trophic levels, energy losses, restrict the length of food chains, restrict length food chains, restrict biomass of higher trophic levels, biomass of trophic levels, 10%, ten percent, 10 percent, The energy added to biomass by each successive trophic level is less, energy added is less, successive trophic level, Most of the energy in food that is digested and absorbed by organisms in a trophic level is released by them in repsiration for use in cell activities, organisms absorb energy, organisms digest energy, cell respiration, use in cell activities, heat loss, lost as heat, It is therefore lost as heat, The organisms in a trophic level are not usually entirely consumed by organisms in the next trophic level, organisms not consumed, not entirely consumed, next trophic level

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