Band 5.5 IELTS Writing Task 1 Model Answer

Overall Band Score: 5.5 · Cambridge IELTS 19 · 2026-11-12

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 5.5)

The flow diagram below illustrate a process of bio fuel also known as ethanol production. The process is natural as well as cyclic.

At the very beginning of the operation sunlight and carbon dioxide are inhale by plants in the form of energy. After trees are formed they starts a process called harvesting that is cutting of trees. They are transported for pre-processing followed by cellulose, cellulose plays an important part in this production, however as Processing cannot be fulfil without it. Subsequently sugars are made, moreover microbes are added in sugars and that is how the Ethanol is generated.

Bio fuels are used in different kind of vehicles such as cars, motorbike, heavy duty truck and even aeroplanes. Vehicles convert the the fuel back into carbon dioxide that repeat the process again as it is cyclic.

All the stages discussed above plays an important role in creating Ethanol, skipping any step can effect the production.

AI examiner evaluation

Task Achievement / Task Response: Band 6.0

You identify the process as cyclical and cover its main stages, from plant growth and harvesting through processing, sugar production, the addition of microbes and ethanol use. This gives the reader a relevant account of the diagram. However, some details are inaccurate or unclear: the diagram shows ethanol used by a car, truck and aeroplane, not a motorbike, and it does not state that trees are cut or transported. The overview could also explain the cycle more precisely: carbon dioxide released by the vehicles returns to the plants, while sunlight supplies energy. The role of cellulose is mentioned but not clearly described as an intermediate stage. More accurate reporting of these relationships and a clearer overview would make the summary more complete.

Coherence and Cohesion: Band 6.0

The response follows the broad sequence of the diagram, and the paragraph break before the discussion of vehicle use helps distinguish production from the later cycle. Linking expressions such as “At the very beginning,” “Subsequently” and “moreover” also show an effort to guide the reader. However, some connections are mechanical or do not express the relationship clearly: “moreover” does not fit the step in which microbes are added, and “however” interrupts the explanation of cellulose and processing. The final sentence repeats the general importance of the stages rather than adding useful process information. Use clearer stage-to-stage links, and organise the account into a concise overview followed by a consistently ordered description.

Lexical Resource: Band 5.5

You use relevant process vocabulary, including “harvesting,” “pre-processing,” “cellulose,” “microbes” and “generated,” which helps communicate the main stages. There is also some variety in how you refer to the process and its products. However, several word choices or collocations are inaccurate or awkward: plants “absorb” sunlight and carbon dioxide rather than “inhale” them, and “cutting of trees” is not a precise description of the diagram’s harvesting stage. “Bio fuel” is normally written as “biofuel,” while “different kind of vehicles” is an imprecise phrase. Aim for accurate, diagram-specific terms and natural collocations; this will make the description clearer and more appropriately formal.

Grammatical Range and Accuracy: Band 5.0

You attempt both simple and more complex sentences, including a relative clause in “Vehicles convert the fuel back into carbon dioxide that repeat the process again.” The overall meaning is generally recoverable, but some errors in agreement, verb forms and sentence construction reduce accuracy. For example, “The flow diagram … illustrate” needs a singular verb, and “they starts” should agree with its plural subject. “As Processing cannot be fulfil without it” is an incomplete and faulty clause; it could be recast as “Processing cannot take place without cellulose.” There are also agreement errors in “All the stages … plays” and “that repeat.” Check subject–verb agreement and ensure each clause has a complete, correctly formed verb.

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