Reorder Paragraphs · Part 2: Reading
Blue halo
10 students marked "I sat this"Added 20 Mar 2020Question #100203
Put the paragraphs in order.
- ALatest research has found that several common flower species have nanoscale ridges on the surface of their petals that meddle with light when viewed from certain angles.
- BThese nanostructures scatter light particles in the blue to ultraviolet colour spectrum, generating a subtle effect that scientists have christened the 'blue halo'.
- CThey found that bees can see the blue halo, and use it as a signal to locate flowers more efficiently
- DBy manufacturing artificial surfaces that replicated 'blue halos', scientists were able to test the effect on pollinators, in this case foraging bumblebees.
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Reorder Paragraphs format (Pearson)
Pearson's name: Reorder Paragraph
| Prompt | Text up to 110 words |
|---|---|
| Time to answer | Not set per question (Part 2 lasts 23–30 minutes) |
| Skills assessed | Reading |
How it is scored
- Partial credit applies: a partly correct response still scores.
Source: Pearson, PTE Academic & UKVI test format, Part 2: Reading, checked 9 October 2026.