Concerning the food chain in ecosystems, consider the following statements:
1. A food chain illustrates the order in which a chain of organisms feeds upon each other.
2. Food Chains are found within the population of a species.
3. A food chain illustrates the number of organisms, which is eaten by others.
Which of the statements given above is /are correct?
a) Only 1
b) 1 and 2
c) 1, 2, and 3
d) 1 and 3
Answer. a) Only 1
Food Chain:
A food chain is a chain of events in the ecosystem where one living organism eats another organism, and later that organism is consumed by another larger organism.
A food chain illustrates the chain of organism feed from Producer to apex consumer.
Detritivores (decomposers) are not included in the Food Chain.
An average of 10 % of energy gets transferred from one trophic level to the next trophic level.
Producers ( autotrophs ) make the first trophic level of the ecosystem.
Food Web:
A food web consists of all the food chains in a single ecosystem. One organism can be part of many food chains.
Other Key Facts:
Ecology word coined by Earnest Haeckel
Ecosystem word coined by Sir AG Tansley.
Ecological pyramid coined by Charles Elton.
10 percent law of energy transfer in the ecosystem was given by Lindemann.
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