How much of fruit equals one serving of fruit?

you are supposed to have 2-3 servings of fruits, i dont understand how much fruit equals one serving?

How much of fruit equals one serving of fruit?
A serving can consist of:



1 apple

1 banana

1 orange

1 cup of berries

a slice of watermelon, cantalope



There is a good chart/diagram here: http://www.hc-sc.gc.ca/fn-an/food-guide-...