Sorghum is a more commonly-grown summer cereal crop in Australia than maize because:

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To analyze why sorghum is more commonly grown than maize in Australian summers, we consider the key agronomic factors involved.
Option 1: It is much more tolerant of dry growing conditions (drought). This is accurate; sorghum has excellent tolerance to limited rainfall and high evaporative demand, making it well-suited to the arid to semi-arid uplands and hot, dry seasons typical of many Australian farming environments. Its deep root system and C4 photosynthesis contribute to better water-use efficiency under drought, supporting yield stability when rainfall is unreliable.
Option 2: There is no market for maize in Australia. This is misleading. Maize is grown commercially in parts of Australia, especially for grain and fodder, and there is indeed a market. While sorghum may be favored in drier regions, the blanket claim about no maize market is incorrect and ignores regional economics and crop diversification.
Option 3: Sorghum is an indigenous crop that was domesticated in Australia. This is factually incorrect. Sorghum is not indigenous to Australia; it originated in Africa and was introduced to Australia later for adaptation to dry conditions. The assertion that it is indigenous misrepresents its origin.
Option 4: Sorghum is used to make wine. While some grain crops can be used in fermentation processes, sorghum is not primarily grown for wine production, especially in Australia. The main value of sorghum there is as a drought-tolerant cereal grain for feed, food, or export, rather than as a wine ingredient. This option confuses product use with production rationale.
Thus, after evaluating all options, the reasoning clearly supports option 1 as the correct explanation for sorghum’s relative prevalence in Australian summer crops, with the remaining statements either inaccurate or not aligned with the practical agricultural context.

AGRI10048_2025_SM2 Practice Exam

Sorghum is a more commonly-grown summer cereal crop in Australia than maize because:

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