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 given process diagram shows the six squential stages for production of ethanol from biofuel.

Overall, the energy from the sun is taken for the growth of crops after harvesting, pre-processing, celloulose,processing and converted it into sugars and specified microbes are added that convert it into ethanol.

In the begining, the sunlight is absorbed from the sun by plants, trees and crops for their growth along with carbon dioxide.When they grow enough the harvesting process is started by farmers. After that, the left overs are send to the pre-processing stage. In this process the remains are compressed and convert into cellulose.

Moreover, these are send to the labortaory for processing, different types of chemicals are used for the treatment of cellulose and finally convert it into sugars. After that the microbes are added for deposition that convert sugar into ethanol. The ethanol is ready for fuel purposes and sold to the vehicles such as cars,aeroplane and trucks. Due their consumption of fuel the carbon dioxide is released into atmosphere that again helps to start the cycle.

AI examiner evaluation

Task Achievement / Task Response: Band 6.0

You cover the main stages from plant growth through processing and fermentation to ethanol use, and you identify the return of carbon dioxide as part of a cycle. This gives the reader a generally accurate account of the process. However, the overview calls these “six” stages, although the diagram presents a longer sequence, and some details are either unclear or unsupported: for example, it does not specify that farmers compress the remains, use chemicals, or sell the ethanol. The account also gives limited attention to the diagram’s key transformation from cellulose to sugars and to the three transport modes. For a stronger response, describe only what is shown and make the cyclical relationship and principal stages more precise.

Coherence and Cohesion: Band 6.0

The response has a recognisable structure: an introduction, an overview, and paragraphs that move through the production sequence. Connectors such as “In the beginning,” “After that,” and “Moreover” help signal progression, and the final sentence returns to the cycle. At times, however, the linking feels mechanical, and the overview’s sequence is difficult to follow because several stages are compressed into one sentence. References such as “these” and “the remains” are not always precise, so the reader must infer what material is being discussed. Grouping the stages more clearly—for example, plant growth and harvesting, then conversion and fuel use—and using explicit references to the material at each stage would improve flow.

Lexical Resource: Band 5.5

You use relevant process vocabulary, including “harvesting,” “pre-processing,” “cellulose,” “microbes,” and “carbon dioxide,” which helps communicate the topic. There is also some variety in how stages are described. However, several word choices or collocations are inaccurate or imprecise: “microbes are added for deposition” does not clearly describe their role, and “sold to the vehicles” is not a natural way to explain fuel use. Spelling errors such as “squential,” “celloulose,” “begining,” and “labortaory” also reduce accuracy. Aim for precise, conventional process language and check spelling carefully; for instance, say that microbes are added to convert sugars into ethanol.

Grammatical Range and Accuracy: Band 5.5

You attempt both simple and more complex sentences, including a relative clause in “microbes are added … that convert sugar into ethanol” and a time clause beginning “When they grow enough.” The overall meaning is usually understandable, but some grammatical errors recur. For example, “the left overs are send” has an incorrect verb form, while “the remains are compressed and convert into cellulose” lacks a consistent passive construction. The overview also has an incomplete structure in “converted it into sugars,” and punctuation spacing is inconsistent, as in “dioxide.When” and “cars,aeroplane.” Use complete, parallel clauses and check passive forms, since the process is mostly described as actions performed on materials.

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.