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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Difference between food chain and food web: Food Chain Food Web A linear sequence of organisms where energy flows in one direction. A network of interconnected food chains showing multiple pathways of energy flow. It is simple and involves one path of energy transfer. It is complex and involves many inter-linked food chains. Impact of decrease in deer population: First trophic level (grass): The population of grass will increase because there will be fewer deer to consume it. Third trophic level (tiger): The population of tigers will decrease because their food supply (deer) has reduced, leading to starvation or migration.

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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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Food Chain	Food Web
A linear sequence of organisms where energy flows in one direction.	A network of interconnected food chains showing multiple pathways of energy flow.
It is simple and involves one path of energy transfer.	It is complex and involves many inter-linked food chains.