Band 6.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.0 · Cambridge IELTS 19 · 2026-10-20

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 diagram demomstrates making process of biofuel named ethanol involving various methods.

Overall, the diagram describes a circular process of nature, from consumption of energy sunlight and carbondioxide by plants to manufacture process of ethanol, to use of ethanol by different means to emission of carbondioxide by different means of transportation.

To begin with, plants which are the primary source of manufacturing ethanol, needs energy, sunlight in addition wiith carbondioxide for their growth. The fully grown plant is then harvested and brought to machines for pre-processing, then turns to cellulose. The formed cellulose is then further processed in labs with various cemicals to form sugar. Microbes are added to the formed sugar which then goes through the process of converting into ethanol.

The formed ethanol is used by various means of transportaion (vehicles) as the form of fuel, inside the vehicle engine, ethanol is burned and thus turned into carbondioxide which is then emitted in air, emitted carbondioxide is the major means for plants to survive as for respiration purposes.

To sum up it is a circular process that involves manufacturing of biogas through plants and use of such biogas by modern means of transport and again emitted as a form of carbondioxide which is needed for plants to grow, it is overall a circular process.

AI examiner evaluation

Task Achievement / Task Response: Band 6.5

You cover the main stages and identify the cycle linking plant growth, ethanol production, transport use and carbon-dioxide release. The overview clearly recognises the circular nature of the process, and the account follows the diagram from growth through processing to fuel use. This meets the task well, with some detail already approaching a fuller, more precise account. However, a few points are unclear or unsupported: the diagram shows processing but not “labs” or “various chemicals,” and it does not specify that carbon dioxide is needed for plant respiration. The final reference to “biogas” is also inaccurate, since the product shown is ethanol. To strengthen the response, describe the cellulose-to-sugar and microbe stages more precisely and avoid adding explanations not shown in the diagram.

Coherence and Cohesion: Band 6.0

The response has a clear overall arrangement: an introduction and overview are followed by the production stages and then the fuel’s use and emissions. Sequencing phrases such as “To begin with,” “then,” and “The formed ethanol” help the reader follow the process. However, cohesion is sometimes mechanical, and the final “To sum up” paragraph repeats the circular-process overview rather than adding a distinct concluding feature. Some references are also imprecise: “which then goes through the process” could refer to either the sugar or the microbes. Grouping the stages into two focused body paragraphs and using clearer references—for example, “These sugars are then fermented by microbes”—would make progression smoother and reduce repetition.

Lexical Resource: Band 5.5

You use relevant process vocabulary, including “harvested,” “pre-processing,” “cellulose,” “microbes,” and “emitted,” so the reader can understand the main stages. There is also some attempt to vary wording through phrases such as “primary source” and “circular process.” However, inaccurate word choice and spelling reduce precision: “biogas” is not the fuel shown, “sugar” should be plural in this context, and “manufacturing process” is an awkward fit for the opening. Errors such as “demomstrates,” “wiith,” “cemicals,” and “transportaion” are noticeable. Aim for accurate process collocations and proofread spelling; using “production,” “sugars,” and “fermentation” 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 a relative clause in “plants which are the primary source…” and a sequence of linked stages. The overall meaning remains understandable, but some grammatical errors recur. For example, “plants … needs energy” has subject–verb disagreement, while “from consumption … by plants to manufacture process” is not a well-formed parallel construction. The sentence beginning “The formed ethanol is used…” also joins several clauses with commas, making the structure difficult to control. Articles and phrasing need attention in expressions such as “as the form of fuel.” Build accuracy by checking agreement, using complete clauses, and separating long sequences into shorter sentences; retain complex structures where their relationships are clear.

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