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प्रश्न
What are decomposers? What will be the consequence if the decomposers are completely eradicated from an ecosystem? Give justification in support of your answer.
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उत्तर
Decomposers include micro-organisms such as bacteria and fungi that obtain nutrients by breaking down the remains of dead plants and animals. They help in the breakdown of organic matter or biomass from the body of dead plants and animals into simple inorganic raw materials, such as carbon dioxide, water, and some nutrients. If decomposers are completely removed from the surface of earth then the remains of dead plants and animals will accumulate. The minerals and organic or inorganic material present in them will not be made again available for use. Thus it will result in the accumulation of wastes and also unavailability of raw materials. This will affect all the biogeochemical cycles and overall life on earth.
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संबंधित प्रश्न
The following statement is true or false :
Secondary consumers and tertiary consumers, both are carnivores.
What is meant by a primary consumer, secondary consumer and a tertiary consumer? Give one example of each.
The decomposers in an ecosystem ______.
Which of the following group of organisms are not constituents of a food chain?
- grass, lion, rabbit, wolf
- plankton, man, fish, grasshopper
- wolf, grass, snake, tiger
- frog, snake, eagle, grass, grasshopper
Match the terms given in column I with the terms given in column II and column III having the same meaning :
| Column I | Column II | Column III |
| (1) Secondary consumer | Herbivore | 1st trophic level |
| (2) Primary consume | Autotroph | 3rd trophic level |
| (3) Producer | Carnivore | 4th trophic level |
| (4) Tertiary consumer | Large carnivore | 2nd trophic level |
With the help of a food chain, explain how biological magnification of harmful chemicals can occur.
What does garbage consist of?
Which of the following is an autotroph?
What is Autotrophs?
Accumulation of non-biodegradable pesticides in the food chain in increasing amount at each higher trophic level is known as
