The term organic is used to describe foods grown without pesticides or herbicides. Organic foods have on occasions be found to be higher in vitamin C and lower in nitrates, however the comparisons are variable. Farmers who produce organic produce may also help to protect the environment. However other farmers do this as well but may not have gone to the trouble and expensive of obtaining certification.
What is more important than whether the food is organic are the types and amounts of different foods consumed. You are better off eating a corn cob that isn’t organic than eating organic French fries! Eating the recommended serves of fruit and vegetables will benefit your health whether they are organic or not. There is no current evidence to suggest that other organic produce can help reduce the risk of cancer.
Do wash all fruits and vegetables well before they are consumed to remove any traces of pesticides.