The question below consists of a set of labeled sentences. Out of the four options given, select the most logical order of the sentences to form a coherent paragraph.
P. Many deadwood beetle species recycle the nutrients of woodlands.
Q. Some deadwood beetles are predators or parasitoids to other insect species and restrict population growth of potential pests.
R. Others have recently been found to be pollinators.
S. Working alongside fungi, bacteria and other invertebrates, they break down dead wood and return the nutrients back to the soil.

Question

Question

This question was previously asked in

SSC CGL 2022 Tier-I Official Paper (Held On : 02 Dec 2022 Shift 4)

Answer 1

The correct answer is option 1) i.e. "PSQR."
Key Points

In the abovementioned paragraph, there is a chronological sequence of the sentences.
Sentence P is the first sentence as it begins with the noun 'Many deadwood beetle species' and mentions that they recycle the nutrients of woodlands. Thus highlighting their purpose in the ecosystem.
Sentence S is the second sentence as it begins with the gerund 'Working' and introduces the idea that deadwood beetles work alongside fungi, bacteria and other invertebrates to break down dead wood and return the nutrients back to the soil. By giving detailed information it establishes a relation with the previous sentence.
The only option that shows such an arrangement is Option 1.
Sentence Q is the third sentence as it begins with the noun 'Some deadwood beetles' and mentions Some deadwood beetles are parasitoids or predators of other insect species, which helps control the spread of pest insects. Thus it gives exceptionally additional information in regard to the previous sentence.
Sentence R is the last sentence and mentions that some deadwood beetles have recently been found to be pollinators, which adds to the diversity of their roles in ecosystems. Thus it establishes a relation with the previous sentence.
Thus, the correct answer is Option 1.

The correct order is:

P. Many deadwood beetle species recycle the nutrients of woodlands.

S. Working alongside fungi, bacteria and other invertebrates, they break down dead wood and return the nutrients back to the soil.

Q. Some deadwood beetles are predators or parasitoids to other insect species and restrict population growth of potential pests.

R. Others have recently been found to be pollinators.