Question

Food chains differ from food webs in that:
(i) Food chains are a single sequence of who eats whom in a community.
(ii) Food chains better represent the entire community.
(iii) Food webs represent the complex interaction among food chains.
(iv) Food chain is the flow of energy in a population.
A. (i) and (iii)
B. (i) and (iv)
C. (i), (ii) and (iii)
D. (i), (ii), (iii) and (iv)

Answer 1

Hint: A food chain is the direct transfer of nutrients and energy from one creature to another. Each organism occupies a specific trophic level; for example, grass occupies trophic level 1, while apex predators occupy trophic levels 4 or 5.
The mixture of numerous separate food chains and the relationships that exist between the various organisms is known as a food web.


Complete step by step solution:
An apex predator species, such as grizzly bears or killer whales, detritivores, or decomposer species, are at the end of a food chain, which is a linear network of links in a food web starting from producer organisms (such as grass or trees that use radiation from the Sun to make their food via photosynthesis). A food chain also demonstrates how organisms are connected to one another by the foods they consume. A food chain's levels correspond to several trophic levels. A food chain is distinct from a food web because it aggregates the intricate web of feeding relationships between various species and moves along a direct, linear path with only one animal at a time. It is a food web because food chains naturally connect to one another.

For the majority of organisms to survive, food chains are crucial. In rare situations, the extinction of a species can happen when just one component of the food chain is eliminated.
 In the food chain, primary producers are at the bottom.. Primary producers, or autotrophs, can make complex organic compounds using energy from either sunlight or inorganic chemical compounds, whereas organisms at higher trophic levels cannot and must instead devour primary producers or other life that also consumes primary producers.
A food chain is a simple network that depicts how nutrients and energy move linearly from one trophic level to another. A food web is a collection of interconnected food chains at various trophic levels. A food web also shows each of the several food chains that are present in an ecosystem.
Therefore option A is the correct answer, i.e., food chains are a single sequence of who eats whom in a community and food webs represent the complex interaction among food chains.

Note:
For the majority of organisms to survive, food chains are crucial. In rare situations, the extinction of a species can happen when just one component of the food chain is eliminatedThe foundation of the food chain is primary producers. Primary producers, or autotrophs, can make complex organic compounds using energy from either sunlight or inorganic chemical compounds, whereas organisms at higher trophic levels cannot and must instead devour primary producers or other life that also consumes primary producers.