Band 6.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.0 · Cambridge IELTS 19 · 2026-10-31

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 diagram illustrates the processing of biofuel production. Biofuel like ethanol production cycle goes through several steps and finally can recycle naturally into the production to distribution process.

At first, plants and crops grow by taking energy from sunlight and making foods from carbon di-oxide which is a recycling product of this cycle. After riping, crops are harvested and go through pre-processing while husk is produced which further processed into cellulose to sugars. These sugars are added with microbes that help to form ethanol which is the final product use as biofuel.

Biofuel has various uses, especially in various types of vehicles like car, trucks as well as aeroplane. These vehicles emittes carbon di-oxide as by-product while using the fuel. This carbon di-oxide further provides as essential material to grow the plants. That's how it completes the cycle of biofuel production.

Biofuel is a natural resource of energy that provides a necessary role in this modern era.

AI examiner evaluation

Task Achievement / Task Response: Band 6.5

You cover the main stages and the circular nature of the process: plant growth, harvesting, pre-processing, conversion to cellulose and sugars, the addition of microbes, ethanol use in transport, and carbon dioxide returning to support plant growth. This gives the reader a clear account of the overall cycle. Some details, however, are inaccurate or unclear: the diagram does not show husk being produced, and it does not say that cellulose is processed directly “into cellulose to sugars”; rather, cellulose is processed to produce sugars. The final sentence about biofuel’s importance in the modern era is not a feature of the diagram. To strengthen the report, keep the focus on the depicted stages and describe the conversion sequence more precisely.

Coherence and Cohesion: Band 6.5

The response is arranged in a sensible sequence, moving from plant growth through production and transport to the return of carbon dioxide. Paragraphing also separates the production stages from the fuel’s use, and links such as “At first,” “After,” and “These vehicles” help the reader follow the process. Some connections are less clear, particularly “while husk is produced which further processed into cellulose to sugars,” where the relationships between stages are difficult to track. The opening also refers to recycling into a “production to distribution process,” which does not clearly describe the cycle shown. Use one clear stage per clause and refer explicitly to the material being processed to make progression more precise and less dependent on broad linking phrases.

Lexical Resource: Band 6.0

You use a relevant range of process and topic vocabulary, including “pre-processing,” “cellulose,” “microbes,” “by-product,” and “essential material.” These choices show an attempt to use specific language rather than relying only on basic terms. However, several word choices or collocations are inaccurate or awkward, such as “making foods,” “ripening” for crops being ready to harvest, “added with microbes,” and “provides as essential material.” There are also spelling or form errors in “carbon di-oxide” and “emittes.” Aim for precise process verbs and standard forms, and avoid adding terms such as “husk” when the diagram does not identify that material. This would make the description more natural and exact.

Grammatical Range and Accuracy: Band 5.5

You attempt both simple and more complex sentence forms, including clauses with “while,” “which,” and “that,” and the overall meaning is generally understandable. Some grammatical errors remain, however, and they make parts of the process description harder to follow. For example, “which further processed” is missing an auxiliary verb, while “These sugars are added with microbes” uses an incorrect passive construction. There are also agreement and verb-form problems in “Biofuel like ethanol production cycle goes” and “vehicles emittes.” Review subject–verb agreement, passive forms, and clause construction. More consistently accurate sentences would help you express the sequence clearly while retaining the range of structures you are attempting.

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