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 cyclical diagram depicts the biofuel production from carbon dioxide and sunlight.Ethanol mainly used in transportation puorpose.The formation of ethanol carries different steps to follow.
Firstly,the main source of energy is sunlight also carbon dioxide that are help in plants and trees grow.However,the heavy machineries used for Harvesting after the plant grows.For pre-processing process use diffrent machine for making small particles of large plants that is called Cellulose.
Seconldy,After the formation of cellulose it was sent in laboratary for processing pourpose that convert cellulose into sugars.Now,adding microbes in sugars to manufacture Ethanol.This Ethanol manufacturing helps to grow economy using in diffrent transport. Such as, airplanes,trucks and cars.After used of eathanol in vehicles carbon dioxide emits and emarged with the air.
Overall,the whole diagram is recycled from energy to 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 response covers the general cyclical nature of the ethanol production diagram, mentioning the main stages such as plant growth, harvesting, pre-processing into cellulose, processing into sugars, adding microbes, and final fuel use resulting in carbon dioxide emissions. However, the response fails to meet the minimum word count requirement of 150 words, stopping at only 130 words. Due to this under-length penalty, as well as some under-development of specific details and comparison features shown in the diagram, Task Achievement is limited to a Band 5.0.
Coherence and Cohesion — Band 5.0
The student attempts to structure the response using paragraph breaks to separate the introduction and different stages of the cycle, employing sequencing words like 'Firstly', 'Seconldy', and 'Overall'. However, the logical progression is frequently disrupted by awkward transitions, mechanical cohesive devices, and poor punctuation. Referencing is occasionally unclear, such as 'It was sent in laboratary for processing pourpose that convert cellulose into sugars.' These organizational and referencing flaws place the response within the Band 5.0 descriptor range.
Lexical Resource — Band 5.0
The vocabulary used is basic and repetitive, with several noticeable spelling and word-choice errors that occasionally cause difficulty for the reader (e.g., 'puorpose' instead of purpose, 'Seconldy', 'laboratary', 'pourpose', 'emarged'). While the student attempts less common vocabulary related to the process, such as 'cellolose' and 'microbes', inaccurate word forms and spelling mistakes ('eathanol') restrict the lexical range and precision. This performance aligns with Band 5.0 descriptors.
Grammatical Range and Accuracy — Band 5.0
The student demonstrates a limited range of sentence structures, relying mostly on simple sentences and faulty attempts at complex forms. There are frequent grammatical errors, particularly with missing auxiliary verbs, incorrect prepositions, and article misuse (e.g., 'Ethanol mainly used in transportation puorpose', 'carbon dioxide that are help in plants', 'For pre-processing process use diffrent machine'). These errors frequently cause strain and difficulty for the reader, matching the criteria for Band 5.0.
See this exact question answered at other band scores — the same prompt compared across bands.
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