Band 6.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.0 · Cambridge IELTS 19 · 2026-11-08

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 process chart illustrates the production of ethanol. Biofuel is one of the major source of energy consumed by different industrial sectors.

Overall, there are more than seven stages which plays a crucial role in the processing of this fuel. It starts with the natural energy we receive in the form of sunlight and ends with adding microbes in it.

Initially, Internal combustion engines releases carbon dioxide which is captured by trees and plant also they absorb sunlight to grow. Resultantly, the harvesting can be done. In the next step, the plants are sent for pre-processing where cellulose is formed.

After the fourth step, cellulose formed is under processing which make sugar consecutively microbes are being added in them to make the final product Ethanol. The following biofuel is then handed over to different source of transportations and delivered to their final destinations. These running engines also produce carbon dioxide which is also captured by the plants and crops present near them.

AI examiner evaluation

Task Achievement / Task Response: Band 6.0

You identify the process as ethanol production and describe several central stages, including plant growth, harvesting, pre-processing, cellulose, processing, sugars, microbes and transport use. You also recognise the cycle in which carbon dioxide returns to plants. However, the overview is partly inaccurate: the process does not end with microbes being added; this step leads to ethanol, which is then used by vehicles before carbon dioxide returns to the plants. The claim that internal-combustion engines initially release the carbon dioxide is not shown as a distinct starting stage, and “sugar” should be sugars. Some stages are compressed or unclear, particularly how cellulose is converted into sugars. A more precise overview and fuller reporting of the cycle would make the key features clearer.

Coherence and Cohesion: Band 6.0

The response has a recognisable structure, moving from an introduction and overview to the early and later stages in separate paragraphs. Sequencing expressions such as “Initially,” “In the next step,” and “After the fourth step” help the reader follow the process. However, the progression is not always clear because the overview says the process ends with microbes, while the final paragraph continues through ethanol, transport and carbon dioxide. Some links are also mechanical or imprecise: “Resultantly” does not clearly connect the preceding growth stage to harvesting, and “the following biofuel” has an unclear reference. Organise the stages in the diagram’s exact order and use clear references to each material or product to strengthen cohesion.

Lexical Resource: Band 6.0

You use an adequate range of process vocabulary, including “harvesting,” “pre-processing,” “cellulose,” “microbes” and “carbon dioxide,” which helps convey the main stages. There are also attempts at more formal wording, such as “consecutively” and “final destinations.” Some choices are inaccurate or unnatural for this diagram, however: “the following biofuel” is unclear, “different source of transportations” is awkward, and “make sugar” is less precise than describing the production of sugars. “Major source of energy consumed by different industrial sectors” adds general information that is not needed to describe the visual. Prefer precise process terms and natural collocations, and avoid unsupported background claims.

Grammatical Range and Accuracy: Band 5.5

You attempt both simple and more complex sentence forms, including a relative clause in “where cellulose is formed” and a longer sentence describing the final stages. Meaning is generally recoverable, but some errors in agreement, verb forms and sentence construction remain. For example, “there are more than seven stages which plays” should use a plural verb, while “engines releases” also has a subject–verb agreement error. In “cellulose formed is under processing which make sugar,” the clause structure and verb agreement are unclear; “microbes are being added in them” also has an unclear pronoun reference. Review agreement and build longer sentences around clearly identified subjects and actions. More consistently accurate complex sentences would improve control.

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