Band 6.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.0 · Cambridge IELTS 19 · 2026-10-30

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 cyclic diagram illustrates the manufacturing of ethanol that is commonly known as biofuel.

Overall, the process begins when palnts and trees grow by using sunlight and carbon dioxide from the environment and ends with ethanol production, passing through different stages.While carbon dioxide is obtained as a by-product.

Trees and plants absorb energy from surroundings, and when become mature enough,then they are harvested by using tractors. The obtained material is then passed through a machine to get a relatively simple product, known as cellulose.It is then passed through severeal processes in laboratries, by adding chemicals in it and as a result a simpler material, sugar is achieved.Microbes are then added in this sugar chemically to get our desired end product, that is Ethanol.This biofuel is used to run all the modes of transport.For instance, cars,trucks,loaders, and aeroplanes.

When the transportation move by using Ethanol, a massive amount of a by product called Carbon dioxide is added to the atmosphere, that is absorbed by plants again and hence the cycle continues.

AI examiner evaluation

Task Achievement / Task Response: Band 6.0

You cover the main stages from plant growth and harvesting through cellulose, processing, sugar, microbes and ethanol, and you correctly identify the cycle’s return of carbon dioxide to the plants. The overview also gives the reader a general sense of the process. However, some details are unclear or not supported by the diagram: it does not show chemicals being added, laboratory processing, or “loaders” as a transport mode. The overview’s statement that the process ends with ethanol production is also incomplete, since the diagram continues through transport and carbon-dioxide release. To strengthen the response, describe the full cycle accurately and distinguish the stages shown from assumptions about how they work.

Coherence and Cohesion: Band 6.0

The response is arranged in a generally logical sequence: an introduction and overview are followed by the production stages and then the carbon-dioxide cycle. This makes the process understandable overall. Some connections, however, are awkward or unclear. For example, “Overall… ends with ethanol production” conflicts with the final paragraph, which describes transport and carbon dioxide, while “While carbon dioxide is obtained as a by-product” is left as a sentence fragment. Several stages are also crowded into one long paragraph, and transitions such as “It is then passed” do not always make the material being referred to explicit. Use clearer paragraphing and linking, and make references to each material or stage precise.

Lexical Resource: Band 5.5

You use relevant process vocabulary, including “harvested,” “cellulose,” “microbes,” “by-product” and “absorbed,” which helps communicate the sequence. There is some variety in how you describe the stages, but several choices are inaccurate or unnatural for this diagram: “manufacturing” is less suitable than “production,” “severeal processes in laboratries” is not shown, and “sugar is achieved” is an awkward collocation. Spelling slips such as “palnts,” “severeal” and “laboratries” also reduce accuracy. Aim for precise, neutral process language and check spelling; avoid adding technical details that the visual does not provide.

Grammatical Range and Accuracy: Band 5.5

You attempt a mix of simple and complex forms, including a relative clause in “a by product called Carbon dioxide is added… that is absorbed by plants again.” The sequence is mostly understandable, but some sentence structures and punctuation are inaccurate. “While carbon dioxide is obtained as a by-product” is a fragment, and “when become mature enough” lacks a subject; “then they are harvested” would complete the clause. There are also errors in “when the transportation move” and “Microbes are then added in this sugar,” involving agreement and sentence patterns. Commas and spaces are inconsistently used, and several sentences run together. Review clause completeness, subject–verb agreement and punctuation while retaining your attempts at complex sentences.

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.