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UPSC Prelims 2021 Paper-1 📅 10 Oct, 2021

Which of the following are detritivores?
1. Earthworms
2. Jellyfish
3. Millipedes
4. Seahorses
5. Woodlice

Select the correct answer using the code given below.

A
1, 2 and 4 only
B
2, 3, 4 and 5 only
C
1, 3 and 5 only
D
1, 2, 3, 4 and 5
Result Summary
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UPSC Prelims
2021 • 10 Oct, 2021 • Paper-1
Which of the following are detritivores?
1. Earthworms
2. Jellyfish
3. Millipedes
4. Seahorses
5. Woodlice

Select the correct answer using the code given below.
Correct Answer
1, 3 and 5 only
Role of Detritivores: Detritivores are heterotrophic organisms that actively consume decomposing organic matter (detritus), such as rotting leaves, animal feces......
Ref/Book : UPSC Prelims 2021
Ref. Subject Environment
Chapter -
Ref. Topic Ecology
Pg. No -
💡 Analysis & Explanation
Role of Detritivores ▼
Detritivores are heterotrophic organisms that actively consume decomposing organic matter (detritus), such as rotting leaves, animal feces, and dead plant material, thereby contributing to nutrient recycling.
Identifying the Decomposers ▼
Earthworms consume soil and dead organic material. Millipedes primarily feed on decaying leaf litter on the forest floor. Woodlice are terrestrial crustaceans that also thrive on rotting wood and plant debris. Thus, items 1, 3, and 5 are correct.
Identifying the Predators ▼
Jellyfish use tentacles equipped with nematocysts to actively hunt and capture small prey. Seahorses are carnivorous marine fish that ambush small crustaceans. Thus, items 2 and 4 are incorrect.
Conclusion ▼
Earthworms, millipedes, and woodlice fit the exact ecological definition of detritivores.
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