Explain how energy limits the number of trophic levels in a food chain or web.

Biology

2 answers:

Hatshy [7]3 years ago

6 0

Answer: Limitation of energy

Explanation:

The energy is very limited as soon as it reaches the higher tropic level. The energy is highest at the basic level which meas at the producers.

As we move up to the next tropic levels only 10 of the energy is transferred to another level.

So, as we move up the energy keeps on decreasing so there is only 4 or 5 tropic level. Loss of energy in the form of heat and less transfer to another level limits the number of trophic level.

kakasveta [241]3 years ago

4 0

Answer:

According to the 10% law, only 10% of energy will be gained by the individuals who are present at a higher trophic levels by eating the organism present at their lower trophic level.

So there would be very little energy available for the organism present at 3rd or 4th trophic level therefore tropic level is limited. This is the reason why a low number of organisms are present at higher tropic levels than lower trophic level.

Therefore decrease in the energy availability at the higher trophic level limits the number of trophic levels in a food chain of the web.

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Aleksandr-060686 [28]

Attached is a table. I found the exercise on another page on the internet and the sample of 100 individuals was categorised on a table - easier to understand than as it is presented here.
"(a) what is the probability that a random sampled individual, gene 1 is dominant" - We should first add up all of the individuals that are dominant for gene 1 (56+24) and then divide it by the total number of individuals (100).
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The probability is of 8 in 10 individuals.
"(b) what is the probability that a random sampled individual, gene 2 is dominant" - Follow the same logic as in the previous question.
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The probability is of 7 in 10 individuals.
"(c) given that gene 1 is dominant, what is the probability that gene 2 is dominant" - Because we are considering those that are dominant for gene 1, our total number of individuals is the total individuals that are dominant for gene 1 and not the whole 100. Once we have this restriction, and we want to know the probability that gene 2 is dominant in these individuals, we should also only consider those that are dominant for gene 2.
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The probability that gene 2 is dominant, given that that gene 1 is dominant, is of 7 in 10 individuals.