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 diagram clearly demomstrates all the crucial steps in producing ethanol.

1st of all plants and trees are planted purposely and they grow with the help of sunlight and carbon dioxide present in atmosphere. Once plants are fully grown then go into harvesting stage where all those plants are taken to the pre-processing unit where plants go through a processing stage which crush the plants and separates the cellulose present in them.This is the middle stage of the whole process.

The 2nd phase starts with the processing of the separated cellulose in the laboratory where the cellulose is processed to produce sugar. Already produced sugar then combines with the microbes which together produces a biofuel known as ethanol.

The finally produced ethanol is directly supplied to the tranport industry and used in running cars,trucks and planes. These in result of consumption releases carbon dioxide which again goes back into the atmosphere.

AI examiner evaluation

Task Achievement / Task Response: Band 6.0

You cover the main stages from plant growth through harvesting, conversion to sugars, the addition of microbes and the use of ethanol in transport. You also identify the cycle’s key feature: carbon dioxide released after fuel use returns to support plant growth. However, some details are unclear or not supported by the diagram. For example, it does not say that plants are “planted purposely,” that cellulose is processed “in the laboratory,” or that the fuel is “directly supplied” to transport. The distinction between pre-processing and processing is also blurred when you say the plants are taken to a unit “where plants go through a processing stage.” A clearer overview and more precise account of these stages would make the summary more complete.

Coherence and Cohesion: Band 6.5

The response has a coherent overall sequence, and the division into an initial plant-growth and preparation phase followed by conversion and fuel use helps the reader follow the process. Linking phrases such as “Once plants are fully grown,” “The 2nd phase starts,” and “These in result” signal progression, though the numbered phase labels feel somewhat mechanical and the final reference in “These” is not fully clear. The first paragraph also compresses several distinct stages into one long sentence, making the relationship between pre-processing, cellulose and processing harder to follow. To strengthen progression, use paragraphs to group the stages and connect each step explicitly, while keeping references such as “the resulting emissions” precise.

Lexical Resource: Band 6.0

You use a suitable range of process vocabulary, including “harvesting,” “pre-processing,” “cellulose,” “microbes,” and “consumption,” which allows you to describe the diagram’s main stages. Some less precise or unnatural choices limit the clarity and flexibility of the vocabulary: “plants are planted purposely” is not shown in the diagram, “combines with the microbes” is an awkward description of the step, and “transport industry” is less exact than naming the transport modes. There are also spelling errors, notably “demomstrates” and “tranport,” and the phrase “These in result of consumption” is not idiomatic. Aim for accurate process collocations and check spelling; for example, describe sugars as being converted with microbes added.

Grammatical Range and Accuracy: Band 5.5

You attempt both simple and complex sentences, using time clauses such as “Once plants are fully grown” and a relative clause in “which crush the plants.” Meaning is generally recoverable, but some grammatical errors and punctuation problems remain. In “where all those plants are taken … where plants go through a processing stage which crush the plants,” the relative clause has an unclear antecedent and the verb does not agree with “stage”; the plants, rather than the stage, are crushed. “Sugar then combines with the microbes which together produces” also has agreement problems, while “These in result of consumption releases” has an unclear subject and faulty verb form. Break long sentences into clearer steps and check subject–verb agreement and clause references.

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