Band 6.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.0 · Cambridge IELTS 19 · 2026-11-03

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 diagram illustrates the procedure through which a biofuel named as ethanaol is made.

This Process involves various steps that starts from plants harvesting and ended up at production of ethanol through microbes. Ethanol is used as fuel to run several vehicles.

Firstly, multiples plants grow by getting energy from environment in form of sunlight and carbon dioxide. A mature plants is then harvested by using harvesting methods. After that pre-processing of various plants is done to make cellulose from it. Furthurmore, cellulose is processed again in lab by using various chemical methods. As a result of second processing sugars are formed. These sugars are than exposed to multiples microbes and hence by adding microbes in sugar ethanol is formed. This prepared ethanol uis then used as a biofuel to run cars, truck and planes. These vehicles than produce carbon dioxide which is released into air. Hrnce, agaun that CO2 is used as energy source by plants to grow, and the process contineous.

AI examiner evaluation

Task Achievement / Task Response: Band 6.5

You cover the main stages from plant growth through harvesting, pre-processing, cellulose, processing, sugars and microbial action to ethanol, and you also report its use in cars, trucks and planes. The closing explanation correctly identifies the carbon-dioxide loop, giving the response a clear overall account of the cycle. Some details are less fully or precisely reported: for example, the diagram shows carbon dioxide returning from the vehicles to the plants, while “released into air” is a generalisation that omits this direct link. The description of processing as occurring “in lab” with “various chemical methods” is not shown in the visual. To strengthen the response, keep explanations strictly grounded in the diagram and make the cycle’s key relationships explicit throughout.

Coherence and Cohesion: Band 6.5

The information follows a sensible chronological order, and sequencing expressions such as “Firstly,” “After that,” “Furthermore,” and “As a result” help the reader follow the production stages. The final sentence also returns to plant growth, reinforcing the cyclical nature of the process. However, the response is presented as one continuous block, so the overview and the detailed stages are not clearly separated. Some links are mechanical or imprecise: “hence” is used to connect microbial addition with ethanol formation, and “than” is used repeatedly where a time sequence is intended. Group the cycle overview separately from the stage-by-stage account, and use a smaller, more varied set of accurate transitions and references to improve flow.

Lexical Resource: Band 5.5

You use relevant process vocabulary, including “harvested,” “pre-processing,” “cellulose,” “sugars,” “microbes,” and “biofuel,” which makes the subject clear. There is also some attempt to describe stages with terms such as “procedure” and “production.” However, several spelling and word-choice errors are noticeable, including “ethanaol,” “Furthurmore,” “uis,” “Hrnce,” and “agaun.” Some phrases are awkward or imprecise, such as “multiples plants,” “harvesting methods,” and “used as energy source by plants.” These errors reduce the accuracy and naturalness of the description, even though the main meaning remains understandable. Proofread spelling carefully and choose precise process collocations rather than adding unsupported wording such as “various chemical methods.”

Grammatical Range and Accuracy: Band 5.5

You attempt both simple and more complex sentence forms, including a result clause in “As a result of second processing sugars are formed” and a sequence joined with “which.” The stages are generally understandable, but some grammatical errors recur. For example, “steps that starts” has a subject–verb agreement problem, while “A mature plants” mismatches the article and plural noun. Tense and form are also inconsistent in “starts … and ended up,” and articles are missing in phrases such as “in form of sunlight” and “as energy source.” These issues do not usually prevent the reader from following the process, but they limit accuracy. Check agreement, articles and consistent present-simple forms, and punctuate introductory phrases with commas.

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.