Please select a subject first
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What is the role of decomposers in the ecosystem?
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What is meant by a primary consumer, secondary consumer and a tertiary consumer? Give one example of each.
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Give an example of a four step food chain operating in grassland. Name the secondary consumer in this food chain
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Draw the food chain with four trophic levels.
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What will happen if we kill all the organisms in one trophic level?
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What is the difference between the food habits of organisms belonging to the first and the third trophic levels? Give one example each of the organisms belonging to these two trophic levels.
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Can the organisms of any trophic level be removed without causing any damage to the ecosystem? Will the impact of removing all the organisms in a trophic level be different for different trophic levels?
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Consider the food chain :
Grass → Deer → Lion
What will happen if all the lions are removed from the above food chain?
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Write down a food chain in the sea.
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Write down a food chain which ends with humans.
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Write down a food chain with five links in it.
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At which trophic level a person is feeding when he is eating roasted chicken.
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At which trophic level a person is feeding when he is eating bread.
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At which trophic level a person is feeding when he is eating eggs.
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At which trophic level a person is feeding when he is eating apple.
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At which trophic level a person is feeding when he is eating fish.
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A student went to study a local pond. In one part of the pond she noticed tadpoles scraping at some pond weed. In another part she saw a water beetle holding a tadpole in its jaws.
(a) Construct a food chain for the pond.
(b) How many links are there in this chain?
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Construct a long food chain.
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