Monday, March 4, 2019

Food Web

ecosystem. In a forest, if deer become r are or make up wiped out by a disease of any natural calamity, the predator. much(prenominal) as lion. can feed on other animals such as fox, *olf, crane etc. till the usual prey animals are lendable again (see Fig. 14. 3). In brief, we can say that many interlocking provender chains make it possible for the living beings to survive minor or major setbacks and changes in their surroundings. Thus, inteiloctiig diet chains provide stbility td the ecosystem.Fig 143 A food web showing the main food links. Note that the starting channelize for each chain is a plant, and several food chains are interconnected to form a food web. 14. 3. 4 Energy fertilise in the Ecosystem The principal source of talent for any ecosystem is sunlight. In the earlier sub-section (14. 3. 1) you deplete studied that solar nil is converted by plants into food materials, and is stored at heart the body of the plant. All food materials that we or other animals con sume are anufactured directly or indirectly by plants. Think of your breakfast, bread is do of a cereal that is produced from plant material. egg from hen which has fed on plant products and milk from cow which has consumed grass or fodder derived from ptants. In a nutsheli, the energy that we obtain from plants either by burning woodwind instrument or by eating them, represents the solar energy trapped by the plants. We are dependent on the stored resources of solar energy.When we eat meat, we obtain energy that had been stored by plants several years before and then taken up by an animal like a goat through grazing. ffin * cut firewood for fuel, we obtain energy accurnulated and stored by trees for perhaps a ampere-second or more. when we burn coal or petroleum, we obtain solar energy rto. d by piant life, millions of years ago. Now let us peculiarity the energy extend through an ecosystem. This is represented diagramatically inFig. l4. 4. Fig. 14. 4 Energy flow in an ecosyste m.

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