Band 5.0 IELTS Writing Task 1 Model Answer
Overall Band Score: 5.0 · Cambridge IELTS 19 · 2026-10-05
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 process diagram illustrate the complete procedure of biofuel production.
As per the process diagram, the mixture of sunlight and carbon dioxide help pants and tree grow. After that, harvesting done by the tractor. Harvasting plant sent to pre pocessing machine to grind and forms cellulose.
Furthermore, cellulose transfer to processing plant to fertilised and it forms sugar. In sugar microbes are add and forms Ethanol. Ethanol used in various vehicles such as car, truck and airplane to drive efficiently. After that, vehicles emmision gas produce carbon dioxide and it goes in the atmosphere and complete the cycle.
Overall, there are 7-8 stage to produce biofuel with natural products. However, Ethanol used to drive vehicles.
AI examiner evaluation
| Criterion | Band |
|---|---|
| Task Achievement / Task Response | 5.0 |
| Coherence and Cohesion | 5.5 |
| Lexical Resource | 5.0 |
| Grammatical Range and Accuracy | 5.0 |
| Overall | 5.0 |
Task Achievement / Task Response: Band 5.0
The response only partially addresses the prompt and fails to meet the minimum word count requirement of 150 words, coming in at 115 words. While it attempts to summarize the main stages of the biofuel production cycle, the coverage is limited and lacks adequate development. Important parts of the process, such as the pre-processing and processing phases, are described in a very basic and underdeveloped manner. The overview is overly simplistic, and the overall progression is incomplete due to the brevity of the response.
Coherence and Cohesion: Band 5.5
There is some basic organization with paragraphs separating the introduction, body details, and a brief overview, but there is no clear overall progression throughout the text. Cohesive devices are sometimes inadequate, inaccurate, or repetitive, with frequent use of transitional markers like 'After that' and 'Furthermore' applied in a mechanical way. Referencing is occasionally unclear, which disrupts the logical flow between the various stages of the ethanol production cycle.
Lexical Resource: Band 5.0
The vocabulary used is limited and barely adequate for the task. There are noticeable errors in word choice, word form, and spelling, such as 'illustrate' instead of 'illustrates', 'pants' instead of 'plants', 'Harvasting' instead of 'Harvesting', and 'emmision' instead of 'emission'. These lexical inaccuracies and spelling mistakes cause some difficulty for the reader and reveal a restricted range of vocabulary.
Grammatical Range and Accuracy: Band 5.0
The response displays a very limited range of grammatical structures, relying mostly on simple sentences with frequent errors in complex structures and basic grammar. There are notable issues with subject-verb agreement, missing articles, and incorrect verb forms, such as 'harvesting done by the tractor', 'cellulose transfer', and 'sugars microbes are add'. These frequent errors in grammar and punctuation persist throughout the text and can cause confusion for the reader.
See this exact question answered at other band scores. The same prompt compared across bands.
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