Example of dichotomous key

Think of 4 fruits - Apple, orange, cherry and banana. A simple dichotomous key would be this:

1 - Fruit shape: Is the fruit round (2) or irregular (3)?

2 - Fruit color: Is the fruit usually red (2a) or orange (2b)?

2a - Fruit seeds: Are there many small seeds (2ai) or one large pit (2aii)?

2ai - Apple

2aii - Cherry

2b - Orange

3 - Banana