Band 5.0 IELTS Writing Task 1 Model Answer
Overall Band Score: 5.0 · Cambridge IELTS 19 · 2026-09-28
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 5.0)
The given process chart illustrates about the production of ethanol from plants and trees by using different stages.
Overall, the process begins with harvesting plants and carried into machines for process, then add microbes to for complete the process of ethanol.
To beging with, for the formation of biofuel sunlight and carbon dioxide is source of energy for plants and trees. In the beggining, after harvesting the plants and trees, it carries for pre- process, the converted into cellulose. Celluloce treats in machines for production of sugar. After that in sugar adds microbes for the completion of ethanol. Then ethanol use as a fuel in cars, trucks and planes and these traffic system release carbon dioxide into atmosphare,, which is essential for plants and trees. This whole process repeat regularly.
AI examiner evaluation
| Criterion | Band |
|---|---|
| Task Achievement / Task Response | 5.0 |
| Coherence and Cohesion | 5.0 |
| Lexical Resource | 5.5 |
| Grammatical Range and Accuracy | 5.0 |
| Overall | 5.0 |
Task Achievement / Task Response: Band 5.0
The response attempts to describe the diagram showing how ethanol is produced, noting key stages such as harvesting, pre-processing into cellulose, conversion to sugars, and the addition of microbes. However, the response fails to meet the minimum length requirement of 150 words, containing only 130 words. Because of this under-length penalty, the score is capped. Furthermore, while the general sequence is outlined, the explanation of the circular nature of the process and the release of carbon dioxide from vehicles back to plants is somewhat rudimentary and lacks full development.
Coherence and Cohesion: Band 5.0
The text is divided into three brief paragraphs, including an introduction, an overall statement, and a body paragraph. There is a basic attempt at logical sequencing using transitional phrases such as "Overall," and "To begin with,". However, referencing and cohesion are frequently faulty, seen in awkward transitions like "it carries for pre- process, the converted into cellulose" and "in sugar adds microbes". Paragraphing is also poorly managed due to the overly compressed and fragmented structure, leading to a lack of smooth progression throughout the text.
Lexical Resource: Band 5.5
The lexical range is limited and repetitive. The student uses basic vocabulary such as "production", "process", "plants", and "trees" repeatedly. There are noticeable word choice and collocation errors, such as "illustrates about", "for complete the process", and "traffic system release carbon dioxide into atmosphare". Spelling errors also occur, such as "beging", "beggining", "Celluloce", and "atmosphare". While the meaning is generally understandable, the frequent inaccuracies and limited range restrict the score.
Grammatical Range and Accuracy: Band 5.0
The student attempts a mix of simple and complex sentence forms, but control over grammar is weak. There are frequent grammatical errors, such as missing subjects, incorrect passive/active voice constructions ("it carries for pre- process, the converted into cellulose"), and subject-verb agreement issues ("this whole process repeat regularly"). Punctuation errors are also present, including double commas ("atmosphare,,"). Because errors are frequent and occasionally cause difficulty for the reader, the writing falls into the Band 5 descriptor range.
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.