Answer:
Ketose
Step-by-step explanation:
Monosaccharides also known as simple sugars are usually represented in a linear chain with a carbon skeleton. All the carbons present with the exception of one have a hydroxyl group that can be attached on either side of the skeleton.
Aldehyde sugars or aldoses such as glucose and galactose have a carbonyl group that is present at the end of the carbon skeleton. Monosaccharides also known as "ketone sugars", example fructose have their carbonyl group located at other parts of the carbon skeleton.