Band 5.0 IELTS Writing Task 1 Model Answer
Overall Band Score: 5.0 · Cambridge IELTS 19 · 2026-09-22
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 of production of biofuel is a very nature friendly and easy in production by utiization of locally available materials. The plants and trees grows in the presence of sunlight and carbon dioxide. as they grows we harvest them when it is required. after harvesting we performed the pre processing of those raw materials to produce a cellulose that are then processed in a well eqipped factories where the cellulose are converted into sugar. After the achievement of sugar the necessary microbes are added to the sugar that results in the production of the biofuel which are called ethanol. This produced ethanol can be used in various transportation facilities and are considered as a fuel for the vehicles like planes and cars.
The production of biofuel is natural and also considered as environment friendly and cause less pollution. And as the primary source of biofuels are trees and plants it is widely available in nature and can be produced anytime.
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 response covers the main steps of the biofuel production cycle depicted in the diagram, moving from plant growth through harvesting, pre-processing, cellulose creation, and processing into sugars, followed by microbe addition and ethanol generation. However, the student includes personal opinions and unsupported commentary not found in the diagram, such as 'a very nature friendly and easy in production' and 'cause less pollution', which detracts from an objective summary of visual data. Furthermore, the important cyclical nature of carbon dioxide release back into plant growth is entirely omitted. While all primary sequential stages are identified, the lack of an overarching summary of the cycle and the inclusion of subjective judgments places this performance in Band 5.
Coherence and Cohesion — Band 5.0
The text is divided into two short paragraphs, with the first outlining the process sequence and the second offering general remarks. Progression is somewhat linear due to basic sequential connectors like 'as they grows', 'after harvesting', and 'after the achievement of sugar'. However, paragraphing is underdeveloped and fails to effectively separate the descriptive report from the concluding remarks. Cohesive devices are repetitive and sometimes inaccurate, such as 'that are then processed' and 'which are called ethanol'. Referencing is occasionally unclear, as seen in the pronoun usage. Overall arrangement shows some basic organization, aligning with Band 5 descriptors.
Lexical Resource — Band 5.0
The vocabulary used is relatively basic and repetitive, utilizing terms directly from the prompt or simple paraphrasing such as 'locally available materials', 'raw materials', and 'transportation facilities'. There are noticeable lexical and morphological errors, including 'utiization' (utilization), 'eqipped' (equipped), and collocation issues like 'after the achievement of sugar'. The student attempts some less common vocabulary such as 'nature friendly' and 'microbes', but overall control is limited. Because the errors cause some difficulty for the reader and the range remains restricted, this fits Band 5.
Grammatical Range and Accuracy — Band 5.0
The response demonstrates a limited range of sentence structures, relying primarily on simple sentences and straightforward compound-complex forms connected by coordinating conjunctions. There are frequent grammatical errors throughout the text, including subject-verb agreement issues ('The plants and trees grows', 'as they grows'), incorrect verb tenses ('we performed'), and missing articles. Punctuation is also weak, with run-on sentences lacking proper internal punctuation. These recurring errors frequently strain the reader and reflect typical Band 5 characteristics.
See this exact question answered at other band scores — the same prompt compared across bands.
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