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प्रश्न
Distinguish between a food chain and a food web.
Differentiate between a food chain and a food web.
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उत्तर
| Sr. No. | Food chain | Food web |
| i. | The food chain is a definite sequence of interactions between producers, consumers, and decomposers (saprophytes). | The Food web is a network of food chains that are interconnected at various levels, forming an intricate web instead of a linear chain. |
| ii. | If any of the intermediate organisms are removed from the chain, it affects the whole food chain. | In the food web, there is more than one alternative of food to most of the organisms; hence, the removal of an organism does not affect the food web directly. |
| iii. | Members of higher trophic levels feed on a single species of organism. | A single organism can consume many sorts of organisms. |
| iv. | In the food chain, energy flow may be easily quantified. | In a food web, calculating energy flow is complicated. |
| v. | Members of the same trophic level compete with one another. | Members of the same as well as distinct trophic levels compete. |
संबंधित प्रश्न
Why the pyramid of energy is always upright? Explain.
In an ecosystem dominated by trees, the pyramid (of numbers) is ______ type.
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(A) producers
(B) primary consumers
(C) secondary consumers
(D) decomposers
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Answer the following question.
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In an aquatic ecosystem, a mollusc typically belongs to-
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Organisms at a higher trophic level have less energy available. Comment.
The number of trophic levels in an ecosystem are limited. Comment.
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Write a short note on pyramid of numbers and pyramid of biomass.
(a) Given below is a pyramid of biomass in an ecosystem where each bar represents the standing crop available in the trophic level. With the help of an example explain the conditions where this kind of pyramid is possible in nature.
(b) Will the pyramid of energy be also of the same shape in this situation? Give a reason for your response.
(a) Draw a pyramid of numbers where a large number of insects are feeding on the leaves of a tree. What is the shape of this pyramid?
(b) Will the pyramid of energy be also of the same shape in this situation? Give a reason for your response.
Draw a diagram of pyramid of energy.
A graphic representation of the biomass relationship between the producer and consumer in an ecosystem is called ______.
Describe pyramid of energy with the help of diagram.
