Why are bacteria and fungi called decomposers ?
Why are bacteria and fungi called decomposers ?
Official answer
Bacteria and fungi are called decomposers because they break down the complex organic substances found in the dead remains and waste products of organisms into simple inorganic substances. These simple substances go into the soil and are used up once more by plants.
Marking scheme
- 1.Defining decomposers as organisms that break down dead remains and waste. (0.5 marks)
- 2.Mentioning the conversion of complex organic substances into simple inorganic substances. (0.5 marks)
Hint
Focus on what happens to dead plants and animals and how nutrients return to the soil.
Quick oral answer
Bacteria and fungi are decomposers because they decompose dead organic matter into simple inorganic nutrients that plants can reuse.
Common mistakes
- 1.Thinking decomposers only eat dead animals; they also break down plant waste and fallen leaves.
- 2.Forgetting to mention that they convert organic matter into inorganic matter.
Analysis and explanation
Decomposers play a vital role in the ecosystem by recycling nutrients. They act on dead matter and waste, converting organic molecules into inorganic forms (like minerals/nutrients) that producers (plants) can re-absorb, thus ensuring the natural replenishment of the soil.
Interesting facts
Without decomposers, the Earth would be covered in piles of dead organisms, and the soil would eventually run out of nutrients for plants to grow.
Question details
Q4 of 41 questions
- Board
- CBSE
- Class
- Class 10
- Subject
- Science
- Year
- 2011
- Section
- Section A
- Marks
- 1
- Type
- Very Short Answer
- Chapter
- Our Environment
- Topic
- Ecosystem Components
- Bloom's level
- Remembering
- Syllabus topic
- Ecosystem, Environmental problems, Waste production and their solutions. Biodegradable and non-biodegradable substances.
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Frequently asked questions
How many marks does this question carry in CBSE Class 10 Science 2011?
This question carries 1 mark in the CBSE Class 10 Science 2011 examination.
Which chapter does this question come from in Science?
This question is from the chapter "Our Environment" in the CBSE Class 10 Science syllabus.
What topic does this question cover in Science?
This question covers the topic "Ecosystem Components" from CBSE Class 10 Science.
What type of question is this in the CBSE Class 10 Science 2011 paper?
This is a Very Short Answer question from Section A in the CBSE Class 10 Science 2011 paper.