ECOLOGY
ENERGY FLOW AND THE FOOD CHAIN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Food webs contain only producers, not consumers.
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Food webs do not include decomposers.
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Food webs contain many different, linked food chains.
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Food webs exist in aquatic environments; food chains exist in terrestrial environments.
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Detailed explanation-1: -A food chain outlines who eats whom. A food web is all of the food chains in an ecosystem. Each organism in an ecosystem occupies a specific trophic level or position in the food chain or web. Producers, who make their own food using photosynthesis or chemosynthesis, make up the bottom of the trophic pyramid.
Detailed explanation-2: -Food webs connect many different food chains, and many different trophic levels. Food webs can support food chains that are long and complicated, or very short. For example, grass in a forest clearing produces its own food through photosynthesis. A rabbit eats the grass.
Detailed explanation-3: -A food chain follows one path of energy and materials between species. A food web is more complex and is a whole system of connected food chains. In a food web, organisms are placed into different trophic levels. Trophic levels include different categories of organisms such as producers, consumers, and decomposers.
Detailed explanation-4: -Food chain is defined as the process of energy transfer from producer by a series of organisms with repeated eating or being eaten. Food web is defined as the interconnected network of food chains at various trophic levels. Unlike food chains, food webs are never straight.
Detailed explanation-5: -A food web is a network of interconnected food chains . It shows the energy flow through part of an ecosystem . In a food web, changes in the population of one organism have an effect on the populations of other organisms. This is called interdependence.