Food web is the interconnection of different food chains, which correlate at various trophic levels operating in an ecosystem.

Food Web in Ecosystem, Ten Percent Law of Energy Transfer, Biological Magnification | PadhAiPro

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CASE_STUDIESFood Web in EcosystemTen Percent Law of Energy TransferBiological MagnificationCBSE PYQ4 sub-questions

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The percentage of solar energy which is not converted into food energy by the leaves of green plants in a terrestrial ecosystem is about :

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"Excessive use of chemicals and pesticides in agriculture adversely effect the environment." Justify this statement.

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Assertion (A) : Accumulation of harmful chemicals is maximum in the organisms at the highest trophic level of a food chain. Reason (R) : Harmful chemicals are sprayed on the crops to protect them from diseases and pests.

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Plants → Deer → Lion In the given food chain, what will be the impact of removing all the organisms of second trophic level on the first and third trophic level? Will the impact be the same for the organisms of the third trophic level in the above food chain if they were present in a food web? Justify.

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Assertion (A) : Green plants trap only 1% of the energy of sunlight that falls on their leaves. Reason (R) : All green plants are the producers in a food chain.

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Differentiate between food chain and food web. In a food chain consisting of deer, grass and tiger, if the population of deer decreases, what will happen to the population of organisms belonging to the first and third trophic levels ?

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