Band 8.5 model answer: problem and solution

A band 8.5 model answer to a real IELTS Writing Task 2 question, with the paragraph plan that fits it. Aim for 250 to 290 words in 40 minutes.

The question

In many countries, seed varieties used in agriculture are becoming less diverse as farmers increasingly rely on a small number of commercial crop strains. What are the causes of this decline in agricultural biodiversity, and what measures could be taken to address the problem?

Your 4-paragraph plan

Introduction (40-50 words). Paraphrase the issue and preview that you will cover causes and solutions.
Body paragraph 1 (80-100 words). The main cause or problem, with a specific example of its effect.
Body paragraph 2 (80-100 words). One or two realistic solutions, saying who should act (government, schools, individuals).
Conclusion (40-50 words). Summarise the problem and your strongest solution.

The trap in this question type

Vague solutions like 'raise awareness' score poorly. Name who acts and what exactly they do, then say what changes as a result.

Band 8.5 model answer

325 words, the length a strong candidate produces in the 40 minutes Task 2 allows (the minimum is 250). Written for this exact question in the official format. Read it once for ideas, then write your own before comparing.

A trip through rural Punjab tells the story quickly: fields that once carried a patchwork of regional wheat and rice landraces now grow almost nothing but a handful of high-yield hybrid varieties sold by seed corporations. This narrowing of agricultural biodiversity has clear causes, but it is not beyond repair. The main driver is economic pressure. Commercial hybrid seeds, bred for uniform ripening and high output, let a farmer in Punjab or Iowa harvest predictably and sell into standardized markets. Banks that issue agricultural loans, and government subsidy schemes such as India's minimum support price for wheat, are often tied to specific certified varieties, which pushes farmers away from traditional seed saving. A second cause is the seed industry itself: firms patent hybrid strains and sell seed that cannot be replanted the following year, so farmers must purchase fresh stock annually, gradually eroding the informal networks through which local varieties were once exchanged between neighbours. Urbanization compounds this, since younger farmers migrating to cities like Lahore or Nairobi rarely inherit the seed-saving knowledge their grandparents held. Addressing this requires action on several fronts. Governments can expand national genebanks, such as India's National Bureau of Plant Genetic Resources, which conserve traditional varieties, and pair them with community-level seed banks that lend samples back to local farmers for replanting. Subsidies could be restructured to reward crop diversity rather than penalize it, for instance by offering premiums for farmers who plant at least two heirloom varieties alongside a commercial one. Agricultural universities could also partner with seed companies to breed open-pollinated varieties that farmers can legally replant, easing dependence on annual purchases. Consumer-facing labelling, similar to organic certification, could create market demand for heritage grains, giving farmers a financial reason to keep them alive. In short, the shrinking pool of crop varieties results from a rational but shortsighted response to market and policy incentives, and reversing it means redesigning those incentives rather than simply appealing to farmers' goodwill.

Why this answer earns band 8.5

Task Response: the essay allocates one full body paragraph to 'the main driver is economic pressure' and its sub-causes, then a separate paragraph beginning 'addressing this requires action on several fronts', giving the two-part question genuinely equal weight rather than tacking a rushed solutions list onto a causes-heavy essay.
Lexical Resource: precise agricultural terms such as 'landraces', 'uniform ripening' and 'open-pollinated varieties' show topic-specific vocabulary well beyond generic essay language.
Grammatical Range and Accuracy: the long relative clause 'seed that cannot be replanted the following year, so farmers must purchase fresh stock annually, gradually eroding the informal networks through which local varieties were once exchanged' controls multiple subordinate ideas in one sentence without losing clarity.
Coherence and Cohesion: the closing sentence 'redesigning those incentives rather than simply appealing to farmers' goodwill' loops back to the causes paragraph, tying the whole essay to a single consistent position instead of merely summarizing.
Lexical Resource: the hedged phrasing 'a rational but shortsighted response' avoids overclaiming while still stating a clear stance, which is more precise than a flat assertion that farmers are simply wrong.

The plan, reusable on any question of this type

Introduce the shift from diverse landraces to a narrow set of commercial hybrids using a concrete regional example, and state that the causes are addressable (~50 words)
Explain the economic causes: subsidy and loan structures tied to certified varieties, patented non-replantable hybrid seed, and urban migration eroding seed-saving knowledge (~126 words)
Propose measures: expanding genebanks paired with community seed banks, restructuring subsidies to reward diversity, university-industry breeding of open-pollinated varieties, and consumer labelling for heritage grains (~115 words)
Conclude that the decline is a rational response to incentives, so the fix lies in redesigning those incentives (~34 words)

Phrases worth learning

This narrowing of ... has clear causes, but it is not beyond repair	to introduce a problem-solution essay while signalling early that a constructive stance will follow
A second cause is	to move cleanly between distinct causes in a causes-and-effects or causes-and-solutions essay
Addressing this requires action on several fronts	to pivot from problem to solution paragraphs in any two-part essay
for instance by offering premiums for	to introduce a concrete illustration of an abstract policy proposal
rather than simply appealing to	to contrast a structural solution with a superficial or purely attitudinal one in a concluding statement

Questions about this answer

What band is this model answer?

It is written to band 8.5, and the notes under it quote the answer's own words to show why.

How long should my answer to this question be?

Write at least 250 words and aim for 250 to 290 in the 40 minutes Task 2 allows. This model answer is 325 words.

What is the most common mistake on a problem and solution question?