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Q28·GS Paper 1 · Prelims 2021

Classification of Detritivorous Organisms

EnvironmentEcology & EcosystemsStatement-basedMediumStatic

Question

Which of the following are detritivores?

  1. 1.

    Earthworms

  2. 2.

    Jellyfish

  3. 3.

    Millipedes

  4. 4.

    Seahorses

  5. 5.

    Woodlice

Options

a

1, 2 and 4 only

b

2, 3 and 4 only

c

1, 3 and 5 only

Answer
d

1, 2, 3, 4 and 5

Explanation

Statements 1, 3, and 5 are correct: earthworms , millipedes , and woodlice feed on dead plant and animal matter (detritus), physically breaking it down in the ecosystem. Jellyfish are carnivorous predators that capture live prey using stinging tentacles , and seahorses are specialized carnivorous fish feeding on small live crustaceans. > Detritivores sustain the soil ecosystem by consuming and fragmenting dead organic debris. Answer: (c).

Question details

Year

2021

Paper

GS Paper 1

Question

Q28

Subject

Environment

Sub-topic

Ecology & Ecosystems

Type

Statement-based

Difficulty

Medium

Nature

Static

Source hint

NCERT Biology Cl.12 Ecology

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