Band 6.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.0 · Cambridge IELTS 19 · 2026-10-11

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 infographic illustrate the cyclical procedure of how a biofuel known as ethanol is made.

Overall, the process consists of 9 distinct steps, the diagram highlights how the carbon dioxide helps in plants and trees growth, which helps in the production of ethanol and how the same ethanol used by vehical produce carbon dioxide that is released in air.

Firstly, plants and trees grow using sunlight and carbon dioxide, which later are harvested by humans, after that they go through a pre-processing phase, which transfrom the raw trees and plants to small refined cellulose. These cellulose undergoes another processing stage, through which sugar is extracted.

Finally, Microbes are added in the extracted sugar which results in ethanol.The final product is used by different vehicles like cars, truck and airplanes. These vehicles produce different gases, including carbon dioxide which is again released in atmosphere, that later combined with sunlight is used by plants and trees for there growth.

AI examiner evaluation

Task Achievement / Task Response: Band 6.5

You cover the main stages and give a relevant overview of the cycle, explaining that plants use sunlight and carbon dioxide and that vehicle use returns carbon dioxide to the atmosphere. The sequence from harvesting through pre-processing, cellulose, processing, sugars, microbes and ethanol is also reported. This meets the task well, though some details are less fully or precisely described: the diagram shows ethanol being used by a car, truck and aeroplane, and carbon dioxide from these vehicles returning to the plants; it does not say that the gases are “combined with sunlight.” Also, “9 distinct steps” is not a particularly useful summary of the process. A more precise overview and closer reporting of the diagram’s relationships would strengthen the response further.

Coherence and Cohesion: Band 6.5

The response is arranged in a clear sequence: an introduction and overview are followed by the early production stages and then the final stages and cycle. Sequencing expressions such as “Firstly,” “after that” and “Finally” help the reader follow the process. The overall progression is coherent, but some linking is mechanical, and several long sentences join multiple stages with commas and “which,” making relationships less clear. For example, the sentence beginning “Firstly, plants and trees grow…” moves through harvesting and pre-processing in one chain. Consider separating stages into shorter sentences and using precise links such as “The resulting cellulose is then processed into sugars.” This would make cohesion more flexible and references clearer.

Lexical Resource: Band 6.0

You use an adequate range of process vocabulary, including “cyclical procedure,” “pre-processing,” “cellulose,” “extracted” and “final product,” which helps describe the diagram. Some less common choices are attempted, but several word forms, spellings or collocations are inaccurate: “infographic illustrate,” “transfrom,” “vehical,” and “sugar is extracted” where the diagram indicates that processing produces sugars. “Different gases” is also imprecise because the diagram specifically identifies carbon dioxide. These errors do not prevent the reader from understanding the main process, but they limit precision and naturalness. Aim for accurate process collocations and check spelling and singular/plural forms before submitting.

Grammatical Range and Accuracy: Band 5.5

You attempt both simple and complex sentences, including clauses with “which” and a sequence of stages linked by time expressions. The meaning is generally understandable, but some grammatical errors remain. The opening should be “The infographic illustrates,” and “the same ethanol used by vehical produce” needs a complete, correctly formed clause, such as “the same ethanol is used by vehicles, which produce carbon dioxide.” There are also agreement and article issues in “These cellulose undergoes” and “in atmosphere,” as well as punctuation problems where “ethanol.The” lacks a space. Breaking up the longest sentences and checking subject–verb agreement, articles and sentence boundaries would improve accuracy while retaining structural variety.

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