Band 6.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.0 · Cambridge IELTS 19 · 2026-11-04

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 illustrates the process by which biofuel known as ethanol is produced.

Overall, the process consist of several stages beginning with the growing plants and trees and then harvesting the trees and end with the production ethanol which is required product. Plants and trees gradually goes through growing, harvesting, pre-processing, cellulose, processing, sugars and then production of ethanol.

First step is plants are growing in the presence of sunlight and carbon dioxide. After the process of growing the next step is harvesting. In this step plants and trees are harvested with the help of cutting machines and transported to industries for further processes. Next step is pre-process step, In this step plants and trees are cut into small pieces and then converted into cellulose. Cellulose is taken into laboratories for further processing.

After this process cellulose is converted into sugars. Then added microbes in sugar and finally converted into ethanol which is desire product. Ethanol is used as a biofuel in airplanes, cars, and trucks. These vehicles used ethanol and produce carbon dioxide in the atmosphere and this carbon dioxide is used by trees and plants for growing purpose.

AI examiner evaluation

Task Achievement / Task Response: Band 6.5

You cover the main stages and give a relevant overview, tracing the process from plant growth through harvesting and conversion to ethanol, then explaining how carbon dioxide returns to support further growth. This captures the diagram’s circular nature and includes the three transport uses. Some details, however, are not shown: the diagram does not specify cutting machines, transporting material to industries, or that pre-processing cuts it into small pieces. These additions make parts of the account less securely grounded in the visual. The stages involving cellulose, sugars and microbes are reported, but their relationships could be described more precisely. To strengthen the response, distinguish clearly between what the diagram labels and what you infer, and make the overview concise and accurate.

Coherence and Cohesion: Band 6.5

The response follows the process in a generally logical order, and the sequence from plant growth to ethanol and carbon dioxide is easy to follow. The opening overview also helps orient the reader. However, the organisation is somewhat repetitive: the overview lists nearly all the stages, and the body then repeats them. Linking phrases such as “After this process” and “Then” are understandable but sometimes mechanical, while the transition from cellulose to sugars could be expressed more clearly. Paragraphing is limited, with the account presented largely as one continuous sequence. Grouping the description into plant growth and preparation, conversion to ethanol, and the carbon cycle would make progression clearer and reduce repetition.

Lexical Resource: Band 6.0

You use a suitable range of process vocabulary, including “harvesting,” “pre-processing,” “cellulose,” “microbes” and “carbon dioxide,” which allows you to describe the main stages. Some word choices and collocations are inaccurate or awkward, such as “production ethanol,” “cutting machines,” “desire product” and “for growing purpose.” “Plants and trees” is also repeated frequently. These choices do not prevent the reader from understanding the process, but they limit precision and naturalness. Use standard process expressions and vary references where possible—for example, “the resulting fuel” or “the feedstock”—while retaining the diagram’s exact labels. Check word forms and collocations when revising, especially in phrases describing conversion and the final product.

Grammatical Range and Accuracy: Band 5.5

You attempt both simple and more complex sentences, including the sequence “After this process cellulose is converted into sugars. Then added microbes in sugar…” The overall meaning is usually clear, but some errors in verb forms, agreement, articles and sentence construction remain. Examples include “the process consist,” “plants and trees gradually goes,” “the production ethanol,” and “Then added microbes in sugar,” where the subject or verb structure is incomplete. The opening overview also combines several stages in a sentence that is difficult to control. Use a clear subject and finite verb in each clause, and check agreement and articles—for example, “the process consists” and “microbes are added to the sugars.” More accurate control of these patterns would improve readability.

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