Band 5.0 IELTS Writing Task 1 Model Answer
Overall Band Score: 5.0 · Cambridge IELTS 19 · 2026-09-15
IELTS Writing Task 1 question
The diagram below shows how a biofuel called ethanol is produced.
Summarise the information by selecting and reporting the main features, and make comparisons where relevant.
Student answer (Band 5.0)
The diagram illustrates the process of the biofuel production from plants and trees and experimenting the sample to extract ethanol from the chemicals and created eco friendly fuel for vehicles.
Overall, there are eight stages in the biofuel production. First stage is the Plants and trees are harvested and transfered to factories for chemical process on the cellulose of trees and final into ethonal which is supplied to trucks and aeroplanes
Intially, Plants and trees are collected as grown properly and transfer into the facility. Furthermore, trees are crushed through the pre-processing technique and converted into cellulose. Next stage is the cellulose is added in chemical processing for extraction of sugars. Although the microbes are added For making the ethanol fuel.
In addition, Ethanol is treat with other substance so it might use for ecofriendly fuel for the vehicle like trucks and cars as well as aeroplane and exust can be release in carbon dioxide and once it use for as a source of energy
AI examiner evaluation
| Criterion | Band |
|---|---|
| Task Achievement / Task Response | 5.0 |
| Coherence and Cohesion | 5.0 |
| Lexical Resource | 5.0 |
| Grammatical Range and Accuracy | 5.0 |
| Overall | 5.0 |
Task Achievement / Task Response — Band 5.0
The student attempts to summarise the diagram illustrating biofuel production and the carbon dioxide cycle. While the general subject is identified, the response contains several inaccuracies and misinterpretations of the visual data. For instance, the text claims that 'trees are crushed through the pre-processing technique and converted into cellulose', whereas the diagram shows pre-processing leading to cellulose as a separate stage before processing into sugars. Furthermore, the overview mentions eight stages, but the description fails to trace the complete cyclical nature effectively, missing the crucial return of carbon dioxide to plants and trees in the final section. Because some key features are under-developed or inaccurately reported, this meets the requirements for a Band 5.0.
Coherence and Cohesion — Band 5.0
The response is organised into multiple paragraphs, including an introduction, an overview, and body paragraphs. However, logical progression is frequently disrupted by awkward referencing and mechanical cohesive devices. For example, sentences begin with abrupt transitions such as 'Intially, Plants and trees are collected...' and 'In addition, Ethanol is treat with other substance...'. Pronoun referencing and clause linking are often faulty, creating confusion about how ideas connect. Paragraphing is attempted, but the internal cohesion within paragraphs lacks smooth flow. This performance aligns with the Band 5.0 descriptors for Coherence and Cohesion.
Lexical Resource — Band 5.0
The student uses a limited and repetitive range of vocabulary suited to the task, such as 'plants', 'trees', 'factories', and 'vehicles'. There are frequent word-formation and word-choice errors, such as 'transfered', 'ethonal', 'Intially', 'treat' instead of treated, and 'exust' instead of exhaust. Less common vocabulary is attempted but often inaccurate ('eco friendly fuel', 'chemical process'). While the vocabulary is minimally adequate to convey the basic topic, the persistent errors in spelling and word form place this at a Band 5.0.
Grammatical Range and Accuracy — Band 5.0
The writer attempts a mix of simple and complex sentence structures, but grammatical control is weak. There are frequent errors in verb tense, voice, and subject-verb agreement throughout the text, such as 'Plants and trees are harvested and transfered', 'cellulose is added in chemical processing', and 'once it use for as a source of energy'. Punctuation is also sparse and inconsistent, occasionally making sentences difficult to parse. These frequent errors cause some difficulty for the reader and reflect the characteristics of a Band 5.0 in Grammatical Range and Accuracy.
See this exact question answered at other band scores — the same prompt compared across bands.
Browse more IELTS Writing model answers or get your own writing scored by the same AI examiner.