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Examples of important annual crops are wheat, rice, and corn. Some scientists are interested in creating perennial
varieties of these plants, or finding perennial substitutes that may be grown instead.
All major crops are grown as annuals, even though some were domesticated long ago from perennial relatives. What do you think is the most important reason that crops are grown as annuals?
Multiple Choice
Since the plant body senesces, annual plants are able to put more resources into the fruit and provide better yield per plant.
The time to harvest is shorter with an annual than a perennial.
An annual grows bigger roots, which draw more nutrients into the plant.
An annual provides new seed reliably every year.
