Band 5.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 5.0 · Cambridge IELTS 19 · 2026-11-10

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 elucidates the mass production of biofuels. In this process we talk about biofuel production how ethanol is made .

In this diagram , process continue step by step.These diagram has 7 steps .

Firstly, These procces start from growing plants and trees

secondly, harvesting of palnts and trees then next is pre processing next is cellulose.

In Addition , another step is to convert cellulose in molecules then sugars .

Next step is , Microbesadded and get singal final product who called is ethanol .

Ethanol used in cars, buss, trains bicycles and airplanes . when ethanol used in cars buss and airplanes then removed carbon dioxide .

Hence , Trees and plants used corbon dioxide for own productions

AI examiner evaluation

Task Achievement / Task Response: Band 4.5

You identify the general subject and include several stages, from plant growth and harvesting through cellulose, sugars, microbes and ethanol. You also recognise the cycle’s link between carbon dioxide and plants. However, the account is only partial: it omits the energy input, the processing stage, and the return of carbon dioxide from the transport vehicles to the plants. The claim that there are “7 steps” is inaccurate, and “convert cellulose in molecules” is not a clear or supported description of the diagram. You also add buses, trains and bicycles, which are not shown. The response is below the required 150 words. To improve, give a clear overview of the full cycle and describe each key stage accurately.

Coherence and Cohesion: Band 5.0

There is a basic attempt to put the process in sequence, using “Firstly,” “secondly,” “then next,” and “Next step.” This helps the reader follow some of the stages, and the final sentence returns to the relationship between plants and carbon dioxide. However, the response has no clear paragraph structure or developed overview, and the progression becomes difficult to follow where “In Addition” introduces an unclear conversion and “Hence” abruptly concludes the account. Several transitions are repetitive or awkward, while sentence boundaries and spacing are inconsistent. Organise the response into an introduction and overview, followed by a logically ordered description of the stages, and use linking expressions only where they clarify the relationship between steps.

Lexical Resource: Band 5.0

The response uses some relevant process vocabulary, including “harvesting,” “pre processing,” “cellulose,” “sugars,” “microbes,” and “carbon dioxide.” These terms show awareness of the diagram’s subject. However, the range is limited and several word choices or spellings make the meaning less clear: “mass production” does not accurately describe the diagram, “molecules” is vague, and “removed carbon dioxide” does not express the release of carbon dioxide. There are also noticeable spelling errors such as “procces,” “palnts,” “buss,” and “corbon.” Use precise process language and check spelling; for example, describe ethanol as being used as fuel and carbon dioxide as being released and then absorbed by growing plants.

Grammatical Range and Accuracy: Band 4.5

Most sentences use simple structures, and the sequence can sometimes be understood despite errors. However, the range is very limited, and frequent problems with sentence formation, agreement, articles, and punctuation make parts difficult to interpret. Examples include “These diagram,” “process continue step by step,” and “Trees and plants used carbon dioxide for own productions,” where the intended meaning and grammatical relationships are unclear. The sentence “Microbesadded and get singal final product who called is ethanol” also lacks a clear subject and correct clause structure. Practise accurate simple sentences first, then combine stages with clauses such as “After the cellulose is processed, sugars are produced.” Check verb forms, singular/plural agreement, articles, and sentence boundaries.

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