Final answer:
As a banana ripens, the color produced in carbohydrate tests changes. The unripe banana produces a sea color in the D test, while the ripe banana produces the E color in the F test.
Step-by-step explanation:
Carbohydrates in a banana undergo changes as the fruit ripens. One test for carbohydrates is the D test, which results in a sea color. As the banana ripens and becomes riper, another test for carbohydrates, the F test, produces the E color. This change in color indicates the presence of different types or amounts of carbohydrates in the banana as it ripens.