ICSE Class 8 Answered
explain the pyramid of numbers and types.
explain some ways of interdependence among organisms
list and explain the abiotic components of an ecosystem
explain the flora and fauna in the forest ecosystem
explain food web, giving suitable examples
explain food chain, giving suitable examples
explain the biotic components of a forest in thecorrect order of trophic sequence
why does the avalable energy decrese from one trophic level to the next?
how are animals dependent on plants?
how are animals dependent on animals?
Asked by Chandrashekhar | 16 Aug, 2018, 06:47: PM
Expert Answer
Food chain:
- The sequential process of eating and being eaten is called a food chain.
- All food chains begin with green plants or producers. Thus, the plants or producers constitute the first trophic level. Example: Grass
- The herbivores or primary consumers that feed on plants constitute the second trophic level. Example: Grasshopper
- The herbivores are next fed upon by the carnivores or secondary consumers. They constitute the third trophic level. Example: Snake
- Finally, the large carnivores, also called the top carnivores or tertiary consumers, form the fourth trophic level. Example: Hawk
- The large carnivores die and form the feed of decomposers. The decomposers feed on these dead animals and plants. Example: Fungi
- There is transfer of food from one organism to the other forming a chain.
Answered by Sheetal Kolte | 17 Aug, 2018, 10:37: AM
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