Band 6.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.0 · Cambridge IELTS 19 · 2026-10-03

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 6.0)

The given process illustrates how a biofuel known as ethanol is produced.

From an overall analysis, the process involves several interconnected steps, beginning with growing plants and trees, followed by harvesting, pre-processing, sugars and adding microbes. The final stage includes formation of ethanol.

To expound the process in detail, the plants and trees are grow with the help of sufficient energy from the sunlight and observe carbon dioxide. Followed by, growing plants are harvest with the help of tractors and go for pre-processing for crushing the crop into small size. Afterwards, the cellulose is generate after pre-processing for the protection of plants.

As further scrutiny reveals, cellulose then undergoes for processing in the large factories to create sugars from it. In addition, the microbes are added to the sugar and finally there is a production of biofuel called ethanol. In the last step involves, the ethanol is transferred to vehicles like cars, trucks and aeroplanes which further emit carbon dioxide to restart this process.

AI examiner evaluation

Task Achievement / Task Response: Band 6.0

The response successfully addresses all parts of the task by providing an overview of how ethanol is produced as a biofuel and selecting the main features of the diagram. The overall progression of the process is outlined, starting from plants and trees growing through to harvesting, pre-processing, adding microbes, and finally producing ethanol and emitting carbon dioxide. However, some aspects are less fully developed or slightly imprecise in their presentation, such as grouping certain steps together without fully explaining their sequential relationship. The overview covers the main stages, but extending the description of the carbon dioxide cycle and its integration into plant growth would have yielded a more thorough and well-developed response.

Coherence and Cohesion: Band 6.0

The text presents a coherent overall arrangement with a clear logical progression from the beginning to the end of the biofuel production cycle. Information is organized into an introduction, an overview paragraph, and two body paragraphs detailing the steps of the process. Cohesive devices such as 'From an overall analysis', 'To expound the process in detail', 'Followed by', and 'Afterwards' are used to guide the reader through the stages, though referencing and cohesive transitions sometimes feel slightly mechanical or repetitive, as seen in the frequent use of 'with the help of' and transitional phrases. Paragraphing is used appropriately to separate the introduction, overview, and detailed body sections.

Lexical Resource: Band 6.0

An adequate range of vocabulary is deployed for the task, successfully communicating the steps of the diagram. The writer attempts less common vocabulary items such as 'interconnected', 'scrutiny', and 'biofuel', demonstrating an awareness of appropriate academic style. However, there are some word choice and word formation inaccuracies that do not impede communication, such as 'observe carbon dioxide' instead of 'absorb', 'harvest' instead of 'harvested', and 'generate' instead of 'generated'. Spelling is generally accurate throughout the response, and vocabulary is sufficient to convey the main mechanical and biological processes shown in the visual prompt.

Grammatical Range and Accuracy: Band 5.0

The writing demonstrates a mix of simple and complex sentence forms, attempting structures like participial clauses and passive voice constructions. However, there are frequent errors in grammar and verb forms, such as 'the plants and trees are grow' (incorrect passive voice), 'growing plants are harvest' (missing participle ending), and 'the cellulose is generate' (incorrect form). Additionally, prepositions and article usage show occasional awkwardness, as in 'undergoes for processing' instead of 'undergoes processing'. While these errors in grammar and punctuation are present and require attention, they rarely impede overall communication of the sequence.

See this exact question answered at other band scores. The same prompt compared across bands.

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