Band 5.0 IELTS Writing Task 1 Model Answer
Overall Band Score: 5.0 · Cambridge IELTS 19 · 2026-09-05
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 diagram below illustrate the process by which the formation of biofuel called ethanol is produced and manufacture.
So the process of formation depend upon many steps so in the first step the tress conserve carbon dioxide from the sunlight and due to sunlight the plant and the trees began to grow and then the formers starts harvesting of the crops that are then moved forward to a process by which cellulose are formed and then it moves towards the industrial process by which the sugar is manufacture and the microbes added to it result in the formation of ethanol.The ethanol is also produced by the the release of carbon dioxide from transport vehicles such as aero planes,trucks,and cars
AI examiner evaluation
| Criterion | Band |
|---|---|
| Task Achievement / Task Response | 4.0 |
| Coherence and Cohesion | 5.0 |
| Lexical Resource | 5.0 |
| Grammatical Range and Accuracy | 5.0 |
| Overall | 5.0 |
Task Achievement / Task Response — Band 4.0
The response fails to meet the minimum word count requirement of 150 words, which significantly impacts the score. Furthermore, the content is inaccurate; the student incorrectly interprets the diagram by suggesting that carbon dioxide from vehicles is part of the ethanol production process, which is not supported by the provided image. The summary lacks a clear overview of the main stages and fails to highlight key features of the process, such as the conversion of cellulose to sugar. The response is underdeveloped and does not fully address the task requirements.
Coherence and Cohesion — Band 5.0
The response lacks paragraphing, consisting of only two long, run-on sentences. The logical flow is weak, as the transition between the agricultural stage and the industrial stage is abrupt and poorly connected. Cohesive devices are either missing or used incorrectly, such as the repetitive use of 'and then' and 'by which'. The overall structure is disjointed, making it difficult for the reader to follow the sequence of the process described in the diagram.
Lexical Resource — Band 5.0
The vocabulary is basic and repetitive. There are several instances of incorrect word choice and word formation, such as 'formation of biofuel... is produced and manufacture' and 'the formers starts harvesting'. The student struggles to use precise technical terminology related to the process, relying on simple, often inaccurate descriptions. The range of vocabulary is insufficient to convey the information clearly, and the errors in word form (e.g., 'manufacture' instead of 'manufactured') are frequent.
Grammatical Range and Accuracy — Band 5.0
The grammatical control is weak, with frequent errors that impede clarity. There are significant issues with subject-verb agreement, such as 'the process... depend' and 'the formers starts'. The sentence structure is simplistic and often run-on, lacking the variety of complex structures required for higher bands. Punctuation is also problematic, with missing spaces after periods and incorrect comma usage. These errors are persistent and affect the overall readability of the text.
See this exact question answered at other band scores — the same prompt compared across bands.
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