Band 5.0 IELTS Writing Task 1 Model Answer
Overall Band Score: 5.0 · Cambridge IELTS 19 · 2026-09-19
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 flow chart illustrates the process of ethanol making.
Overall, the given steps demonstrate the initial phase of biofuel preparation from plants as raw material, after undergoing several steps ethanol is created.
The primary step in ethano preparation starts with harvesting trees and plans, and then it undego pre processing where the cellulose is produced, followed by cellulose processing in large tanks.
After the processing is done cellulose is converted into sugars, these are then facilitated with microbes where sugars acts as source of food, after some time the microbes produce biofuel called ethanol.The ethanol which is made by the microbes are further use in running vehicals where the fuel is converted into Carbon Dioxide and then mixed with air where again this enerey is use as food to plants.
From the above obsevation the process clearly says that the energy which is used by pland and the plants used to produce the biofuel and then again converted to create Carbon Dioxide
AI examiner evaluation
| Criterion | Band |
|---|---|
| Task Achievement / Task Response | 5.0 |
| Coherence and Cohesion | 5.0 |
| Lexical Resource | 5.0 |
| Grammatical Range and Accuracy | 5.0 |
| Overall | 5.0 |
Task Achievement / Task Response — Band 5.0
The student attempts to summarize the diagram showing the process of ethanol production. While the general sequence from plant growth through harvesting, pre-processing, cellulose extraction, and processing into sugars with microbes is outlined, the response lacks a fully developed overview and contains inaccuracies regarding the cyclical nature of the carbon dioxide release. Key features such as the inputs of sunlight and carbon dioxide, and the return of carbon dioxide to the atmosphere before plant absorption, are partially muddled. The length requirement is met, but the overall task fulfillment corresponds to a Band 5.0 level due to under-developed descriptions and limited synthesis of the visual information.
Coherence and Cohesion — Band 5.0
The response is organized into short paragraphs attempting to follow the stages of the diagram, beginning with an introduction and concluding with a brief summary. However, the logical progression is frequently hindered by run-on sentences and poor cohesive referencing, such as 'these are then facilitated with microbes where sugars acts as source of food'. Paragraphing is inconsistent, with the body text clumped together into long, dense sentences that lack appropriate transitional markers. While an overall organizational structure is attempted, the mechanical and sometimes inaccurate use of cohesive devices places this response securely at Band 5.0.
Lexical Resource — Band 5.0
The vocabulary used is basic and repetitive, with several spelling errors ('ethano', 'undego', 'pre processing', 'vehicals', 'enerey', 'pland', 'obsevation'). There are frequent word-choice issues, such as 'ethanol making' instead of 'ethanol production' and 'facilitated with microbes'. While the student attempts some less common vocabulary related to the process, such as 'cellulose' and 'microbes', the heavy presence of lexical inaccuracies and spelling mistakes impedes smooth reading and limits the score to Band 5.0.
Grammatical Range and Accuracy — Band 5.0
The student attempts a mix of simple and complex sentences, but grammatical control is weak. There are numerous errors in punctuation, subject-verb agreement, and clause structures, such as 'The primary step in ethano preparation starts with harvesting trees and plans, and then it undego pre processing where the cellulose is produced...' and 'The ethanol which is made by the microbes are further use in running vehicals'. Frequent errors in verb forms and preposition usage cause noticeable strain for the reader, aligning the grammar performance with Band 5.0.
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