Band 5.0 IELTS Writing Task 1 Model Answer
Overall Band Score: 5.0 · Cambridge IELTS 19 · 2026-09-14
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 diagram illustrates the procedure how ethanol is manufacturered by the biofuel priduction.
overall, it is quite a apparent to notice that this is a cyclic process whic involves several stages. starting from photosynthesis process and ending with the production of ethanol which furthee generate carbon dioxide through transport.
in the detailed view, if plants and trees are cultivate by farmers, then crops are grown with the availability of enegry in the form of sunlight and carbon dioxide thought natural phenomenon. when the crops develop then workers are harvesting it by using tractor. then, this crip move to the further stage and transfer for pre-processing by using machines before cutting the trees into small pieces. then, pieces converted into cellulose.
after that, these mixture move to the factory for processing. then converted into sugars form. moreover, microbes added into the sugars for making ethanol. finally ethanol is made and ready for use. then cars, trucks and airplane use ethanol as a fuel for moving vehicles and produce carbon dioxide again. this carbon dioxids evolve into atmosphere.
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 summarise the main features of the diagram showing the production of ethanol, noting that it is a cyclic process. However, the description contains several inaccuracies, omissions, and a lack of clear comparison or structuring of the sequence. Key stages, such as the exact transformation from cellulose into sugars and the fermentation process, are described in a very simplistic and slightly confused manner (e.g., 'microbes added into the sugars for making ethanol'). While the response covers the general trajectory from photosynthesis to vehicle consumption and back to carbon dioxide, the lack of precision and under-development of certain process steps pulls the score down to Band 5.0.
Coherence and Cohesion — Band 5.0
The response shows some basic organisation, dividing the introduction, overview, and process details into paragraphs. However, the overall progression is heavily hindered by poor formatting (lack of capitalization and punctuation) and repetitive, weak cohesive devices such as 'then', 'after that', and 'moreover'. Referencing is sometimes unclear, and the mechanical repetition of connectors prevents a smooth flow of ideas. Paragraphing is attempted, but internal sentence cohesion is frequently faulty. These features align with a Band 5.0 descriptor.
Lexical Resource — Band 5.0
The vocabulary used is limited and repetitive, with numerous word-form and spelling errors (e.g., 'manufacturered', 'priduction', 'apparent' spelled as 'apparent', 'whic', 'furthee', 'cultivate' instead of cultivated, 'crip' instead of crop). While the student attempts some topic-specific vocabulary such as 'photosynthesis', 'cellulose', 'microbes', and 'carbon dioxide', the noticeable errors in word choice and spelling cause some difficulty for the reader and restrict the lexical score to Band 5.0.
Grammatical Range and Accuracy — Band 5.0
The student demonstrates a very limited range of grammatical structures. Most sentences are simple or poorly constructed compound/complex forms with frequent errors in tense consistency, subject-verb agreement, and articles (e.g., 'if plants and trees are cultivate', 'when the crops develop then workers are harvesting it', 'this mixture move', 'carbon dioxids evolve'). Furthermore, the complete lack of capital letters and standard punctuation throughout the text significantly impacts grammatical accuracy and readability, placing the performance firmly at Band 4.5, rounded to 5.0 for baseline structural attempts.
See this exact question answered at other band scores — the same prompt compared across bands.
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