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With reference to the food chains in Ecosystems which of the following kinds of organism is/are known as decomposer organism/ organisms ?
1. Virus
2. Fungi
3. Bacteria
Select the correct answer using the codes given below.
  • a)
    1 only
  • b)
    2 and 3 only
  • c)
    1 and 3 only
  • d)
    1, 2 and 3
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
With reference to the food chains in Ecosystems which of the following...
Decomposer Organisms in Ecosystems

Decomposer organisms play a crucial role in breaking down dead organic matter and recycling nutrients in ecosystems. They break down complex organic compounds into simpler forms that can be used by other organisms. Some examples of decomposer organisms are:

1. Fungi: Fungi such as mushrooms and molds are important decomposers in ecosystems. They break down dead plant and animal matter and recycle nutrients back into the soil.

2. Bacteria: Bacteria are also important decomposers in ecosystems. They break down dead organic matter into simpler forms that can be used by other organisms.

3. Viruses: Viruses do not have the ability to carry out metabolic processes and are not considered to be living organisms. They cannot break down dead organic matter and are not decomposers in ecosystems.

Therefore, the correct answer is option (b) 2 and 3 only, as fungi and bacteria are known as decomposer organisms in ecosystems.
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With reference to the food chains in Ecosystems which of the following...
Actually fungi are more efficient than bacteria. Both bacteria and fungi are called decomposers because bacteria and fungi break down the dead and decaying organic matter into simpler substances and provide the nutrients back to the soil. ... They help in recycling of nutrients.
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A species that exertsan influence out of proportion to its abundance in an ecosystem is called a keystone species. The keystone species may influence both the species richness of communities and the flow of energy and materials through ecosystems. The sea star Pisaster the flow of energy and materials through ecosystems. The sea star Pisaster ochraceus, which lives in rocky intertidal ecosystems on the Pacific coast of North America, is also an example of a keystone species. Its preferred prey is the mussel Mytilus californianus . In the absence of sea- stars, these mussels crowd out other competitors in a broad belt of the intertidal zone. By consuming mussels, sea star creates bare spaces that are taken over by a variety of other species. A study at the University of washington demonstrated the influence of Pisaster on species richness by removing sea stars from selected parts of the intertidal zone repeatedly over a period of five years. Two major changes occured in the areas from which sea stars were removed. First, the lower edge of the 46. mussel bed extended farther down into the intertidal zone, showing that sea stars are able to eliminate mussels completely where they are covered with water most of the time. Second, and more dramatically, 28 species of animals and algae disappeared from the sea star removal zone. Eventually only Mytilus, the dominant competitor, occupied the entire substratum. Through its effect on competitive relationships, predation by Pisaster largely determines which species live in these rocky intertidal ecosystems.Q. Consider the following assumptions:1. The food chains/food web in an ecosystem are influenced by keystone species.2. The presence of keystone species is a specific characteristic of aquatic ecosystems.3. If the keystone species is completely removed from an ecosystem, it will lead to the collapse of the ecosystem.With reference to the passage, which of the above assumptions is/are valid?

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With reference to the food chains in Ecosystems which of the following kinds of organism is/are known as decomposer organism/ organisms ?1. Virus2. Fungi3. BacteriaSelect the correct answer using the codes given below.a)1 onlyb)2 and 3 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'B'. Can you explain this answer?
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With reference to the food chains in Ecosystems which of the following kinds of organism is/are known as decomposer organism/ organisms ?1. Virus2. Fungi3. BacteriaSelect the correct answer using the codes given below.a)1 onlyb)2 and 3 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'B'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about With reference to the food chains in Ecosystems which of the following kinds of organism is/are known as decomposer organism/ organisms ?1. Virus2. Fungi3. BacteriaSelect the correct answer using the codes given below.a)1 onlyb)2 and 3 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for With reference to the food chains in Ecosystems which of the following kinds of organism is/are known as decomposer organism/ organisms ?1. Virus2. Fungi3. BacteriaSelect the correct answer using the codes given below.a)1 onlyb)2 and 3 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'B'. Can you explain this answer?.
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