Band 6.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.0 · Cambridge IELTS 19 · 2026-10-18

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 depicts the steps involved in the production of a biofuel which called ethanol.

Overall, it is obvious that ehtanol production is done by a series of distinct steps such as, harvesting, pre-processing, processing, and addition of microbes. The end product serves as a biofuel for lorries and jets, which in turn provide carbon dioxde to the trees.

Begining with the growing of different trees and plants in the soil, which subsequently, are harvested by the means of tractors. The next step is called pre-processing, in which wood is converted into small and thread-like pieces, known as cellulose. Cellulose is treated with particular kinds of chemicals for its processing in the labortaries. This step leads to the conversion of cellulose into the sugars.

Moving ahead, different types of microbs are added in the sugar, which results in the production of end product, the ethanol. Ethanol is used as a biofuel in cars, buses, and aeroplanes. All these vehicle emit carbon dioxide, which is used by trees and plants for their internal phenomenos. Here, the process starts again.

AI examiner evaluation

Task Achievement / Task Response: Band 6.5

You identify the diagram as a production cycle and give a clear overview of the main stages, including harvesting, pre-processing, processing and the addition of microbes. You also correctly explain that ethanol is used as fuel and that carbon dioxide returns to support plant growth. Some details, however, are not fully grounded in the diagram: it shows transport by a car, truck and aeroplane, rather than specifically lorries and jets, and it does not show chemicals, laboratory processing, or wood being made into “small and thread-like pieces.” The account covers the main sequence, but these added details and the limited explanation of the cellulose-to-sugar stage keep the description from being more fully precise and developed.

Coherence and Cohesion: Band 6.5

The response is arranged in a sensible sequence: an introduction and overview are followed by the growth and processing stages, then fermentation and the carbon cycle. Paragraphing helps distinguish the overview from the detailed account, and transitions such as “Moving ahead” make the progression easy to follow. However, some links are mechanical or awkward, particularly “Begining with…” and “Here, the process starts again.” The opening of the third paragraph is also a sentence fragment (“Begining with the growing…”), which interrupts the flow. Clearer sentence boundaries and more precise referencing between stages would make the progression smoother and cohesion less noticeable.

Lexical Resource: Band 5.5

You use relevant process vocabulary, including “harvesting,” “pre-processing,” “cellulose,” “sugars” and “biofuel,” which allows the reader to follow the general stages. There is also some attempt at more specific description, such as “thread-like pieces.” However, several word choices are inaccurate or unnatural: “internal phenomenos” does not clearly express how plants use carbon dioxide, and “particular kinds of chemicals” introduces an unsupported and vague detail. Spelling errors such as “ehtanol,” “dioxde,” “Begining,” “labortaries” and “microbs” are noticeable. More accurate collocations and careful proofreading would improve clarity and control.

Grammatical Range and Accuracy: Band 5.5

You attempt a mixture of simple and complex forms, including the relative clause in “which in turn provide carbon dioxide to the trees” and the sequence “which results in the production…”. The main stages are generally understandable, but some sentence structures are faulty. “The given diagram depicts the steps involved in the production of a biofuel which called ethanol” is missing a verb form (“is called”), while “Begining with the growing…,” is a fragment rather than a complete sentence. There are also errors in agreement and articles, as in “All these vehicle emit” and “in the sugar.” Review sentence completeness, verb forms and plural agreement; more consistent accuracy would strengthen the range you are already attempting.

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