Band 6.0 IELTS Writing Task 1 Model Answer
Overall Band Score: 6.0 · Cambridge IELTS 19 · 2026-09-23
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 presented diagram illustrates the production of biofuel known as ethanol by a series on processes involved in a closed loop.
Overall, it is a cyclic process consituted on seven significant stages involved in the production of ethanol. Commencing with harvesting and culinating distribution of ethanol into various transport vehicles.
To begin with, plants and trees absorb sunlight and carbon dioxide as form of energy sources inorder to grow. These are then harvested mechanically and go through pre-processing stage in which they are grinded into smaller fragments through which cellulose is derived and processed in chemical laboratory.
After passing through various rigorous chemical reactions, the chemical bonds in sugar are broken, following the introduction of microbes. after microbial reactions take place ethanol is sunsequantly produced. which is then tranferred and used in transportation vehicles includind aeroplanes. the carbon dioxide generated after combustion from the vehicles is then consumed by trees and the process continues in a circular motion.
AI examiner evaluation
| Criterion | Band |
|---|---|
| Task Achievement / Task Response | 6.5 |
| Coherence and Cohesion | 5.5 |
| Lexical Resource | 5.5 |
| Grammatical Range and Accuracy | 5.5 |
| Overall | 6.0 |
Task Achievement / Task Response: Band 6.5
The response successfully covers all the key stages of the biofuel production cycle presented in the diagram, from the initial growth of plants using sunlight and carbon dioxide to harvesting, pre-processing, chemical processing, sugar breakdown, microbe addition, and ethanol creation. The student correctly identifies the process as a closed loop and highlights how combustion emissions return to the atmosphere for plant absorption. The main features are reported accurately without major omissions or misinterpretations. However, the overview could be slightly more fully developed to capture the overarching cyclic nature and continuous flow of the process. Overall, the task is addressed well, fulfilling the requirements for an academic summary report.
Coherence and Cohesion: Band 5.5
The essay is logically organized into an introduction, an overview paragraph, and two body paragraphs that follow the chronological sequence of the diagram. Cohesive devices such as 'To begin with', 'After passing through', and 'which is then' are used to guide the reader through the stages. However, paragraphing is somewhat fragmented, with the second body paragraph beginning abruptly and containing run-on structures like 'ethanol is sunsequantly produced. which is then tranferred'. Additionally, punctuation errors (such as missing capitals and periods placed mid-sentence) occasionally disrupt the flow, meaning cohesion is not always handled with complete fluency.
Lexical Resource: Band 5.5
The student demonstrates an adequate range of vocabulary suitable for a process description, employing terms like 'mechanically', 'pre-processing', 'chemical reactions', and 'combustion'. There are several attempts at less common vocabulary, such as 'significant stages', 'rigorous', and 'subsequently'. However, lexical control is inconsistent due to frequent spelling errors ('consituted', 'culinating', 'inorder', 'grinded', 'sunsequantly', 'tranferred', 'includind') and minor word-form or prepositional inaccuracies (e.g., 'by a series on processes', 'as form of energy sources'). These errors reflect Band 6 performance, where vocabulary is adequate for the task but spelling and word choices show noticeable lapses.
Grammatical Range and Accuracy: Band 5.5
The writer attempts a mix of simple and complex sentence structures, incorporating relative clauses ('in which they are grinded') and participial phrases ('After passing through...'). However, grammatical accuracy is undermined by several sentence boundary errors, fragments, and punctuation lapses, such as 'ethanol is sunsequantly produced. which is then tranferred'. There are also minor structural awkwardnesses like 'consituted on seven significant stages'. While the errors do not severely impede overall comprehension, they occur frequently enough across the text to prevent the response from reaching Band 7.
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.