Band 5.0 IELTS Writing Task 1 Model Answer
Overall Band Score: 5.0 · Cambridge IELTS 19 · 2026-08-29
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 show a process to produce biofuel called ethanol. This process is done is 11 steps.
Overall, the first process is plants and trees are grown and at the last is ethanol is made then it delivered through cars, trucks ,and airplane.
Firstly, plants and trees are grown and it take energy through sunlight or carbon dioxide and then harvested by machines. After that, pre processing is started cellulosed and then processing through different chemicals.
Secondly, then it converted into sugars and add mcrobes. Furthermore, after added mcrobes finally ethanol is ready and it delivered through cars, trucks, and airplane. The carbon dioxide is go out through these vehicles ( cars, trucks , and airplanes ). Finally carbon dioxide is again used for plants and trees grown and these process is go with same cycle.
AI examiner evaluation
| Criterion | Band |
|---|---|
| Task Achievement / Task Response | 4.5 |
| Coherence and Cohesion | 5.0 |
| Lexical Resource | 5.0 |
| Grammatical Range and Accuracy | 5.0 |
| Overall | 5.0 |
Task Achievement / Task Response — Band 4.5
The response fails to meet the minimum word count requirement of 150 words, which significantly impacts the score. While the student attempts to describe the process, the summary is underdeveloped. Key stages such as 'pre-processing' and the chemical conversion are mentioned but lack sufficient detail or clarity. The overview provided is very basic and does not effectively highlight the main features or the cyclical nature of the process in a sophisticated manner. Because the response is under-length and lacks the necessary depth to fully cover all stages of the diagram, it falls into the lower band range.
Coherence and Cohesion — Band 5.0
The essay is organised into short paragraphs, but the progression of ideas is somewhat mechanical. The use of cohesive devices like 'Firstly', 'Secondly', and 'Furthermore' is present but often used incorrectly or in a repetitive way. For instance, the transition between the production of ethanol and its use in vehicles is abrupt. The referencing is sometimes unclear, and the paragraphing does not effectively separate the different stages of the process, leading to a disjointed flow of information.
Lexical Resource — Band 5.0
The vocabulary is quite limited and repetitive. Words such as 'process', 'plants', 'trees', and 'ethanol' are used frequently without variation. There are also errors in word choice and spelling, such as 'mcrobes' (microbes) and 'cellulosed' (cellulose). The range of vocabulary is insufficient to describe a technical process accurately. To improve, the student needs to incorporate more precise terminology related to industrial processes and avoid repeating the same basic nouns and verbs throughout the text.
Grammatical Range and Accuracy — Band 5.0
The grammar is characterized by frequent errors that occasionally impede clarity. There are consistent issues with subject-verb agreement (e.g., 'The diagram show', 'it take energy'), article usage, and tense consistency. The sentence structures are predominantly simple, and attempts at more complex sentences often result in grammatical inaccuracies, such as 'these process is go with same cycle'. Punctuation is also inconsistent, particularly with the use of parentheses and commas. A wider range of error-free complex structures is required for a higher band.
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.