Band 5.0 IELTS Writing Task 1 Model Answer
Overall Band Score: 5.0 · Cambridge IELTS 19 · 2026-08-18
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 process diagram illustrates making of ethanol production.
Overall, there are several stages to process of biofuel to make ethanol starting with growing plants and trees to adding microbes adding to get ethanol.
Starting with the energy comes from source of sunlight and carbon dioxide to grow plants and trees . The harvested plants take carbon dioxide from nature.After cutting down it comes to pre-processing mixture gives cellulose that goes to processing.
After processing from the lab the suger cells are seen and tested after that the suger cells are comes to next stage by adding microbes. The ethanol comes after the all this stages. the ethanol is ready to supply for cars, trucks and plains and the vachles relises carbon dioxide and that carbon dioxide goes to trees and plants.
AI examiner evaluation
| Criterion | Band |
|---|---|
| Task Achievement / Task Response | 5.0 |
| Coherence and Cohesion | 5.5 |
| Lexical Resource | 5.0 |
| Grammatical Range and Accuracy | 5.0 |
| Overall | 5.0 |
Task Achievement / Task Response — Band 5.0
The response fails to meet the minimum word count requirement of 150 words, which significantly impacts the task achievement score. While the report attempts to describe the stages of the ethanol production process, the description is underdeveloped and lacks sufficient detail. Key features, such as the specific conversion of cellulose into sugar and the subsequent fermentation process, are described in a very simplistic and somewhat inaccurate manner. The overview is present but lacks the necessary clarity to fully summarize the main features of the diagram. To improve, you must ensure you meet the word count and provide a more comprehensive, step-by-step explanation of the process shown in the diagram.
Coherence and Cohesion — Band 5.5
The response is organized into paragraphs, but the logical progression is weak. The use of cohesive devices is limited and often repetitive (e.g., 'After processing', 'After that'). Some sentences are disjointed, making the flow of information feel mechanical. The referencing is occasionally unclear, such as in the phrase 'After cutting down it comes to pre-processing', where the subject is ambiguous. To improve, focus on using a wider variety of linking words and ensure that each sentence logically follows the previous one to create a smoother narrative flow.
Lexical Resource — Band 5.0
The vocabulary is quite basic and repetitive. There are several instances of imprecise word choice, such as 'making of ethanol production' (redundant) and 'suger cells' (incorrect terminology for the process). The spelling of 'suger', 'plains' (instead of planes), and 'vachles' (instead of vehicles) indicates a limited range of vocabulary and poor control over spelling. To reach a higher band, you should aim to use more precise, subject-specific terminology related to industrial processes and ensure accurate spelling of common nouns.
Grammatical Range and Accuracy — Band 5.0
The response relies heavily on simple sentence structures, and there are frequent grammatical errors that occasionally impede clarity. Examples include 'adding microbes adding to get ethanol' (awkward phrasing) and 'the suger cells are comes to next stage' (incorrect verb form). Punctuation is also inconsistent, with missing spaces after periods and commas. The lack of complex sentence structures limits the grammatical range. To improve, practice using a mix of simple and complex sentences and pay closer attention to subject-verb agreement and correct verb tenses.
See this exact question answered at other band scores — the same prompt compared across bands.
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