Excess calories no matter what they originate from will be stored as fat.
Please remember carbs as such are not the enemy:
To ensure that you are eating the right carbs, please keep to eating wholegrains rather than white foods such as white bread, pasta rice etc...
Also, eating proteins and carbohydrates together will help slow down the release of food so that you feel fuller for longer.
Liver as glycogen
yes
Plants store carbohydrates as sugars and starches...cellulose is also a complex structural sugar. Animals store glycogen (a type of complexed sugar) in the liver and muscles for fast energy and convert excess carbohydrate to fat.
Sugar doesn't HAVE to be stored. Any excess sugar in the bloodstream is eliminated by an excretion of the pancreas called insulin.
Plants capture energy from sunlight by means of photosynthesis. Using the green pigment in their leaves called chlorophyll, which makes sugar. They store the sugar primarily as starch. Storage in the form of fat / oil is common too, especially in seeds. Animals mostly store excess sugar in body fat, and plants usually make fruit with excess sugar (as long as they have enough water).
Excess sugar is converted to fat and stored in fat cells.
glucose is the common form of simple sugar
Glucagon
Sugar. Green plants manufacture sugar through photosynthesis.
Carbohydrates store fiber.
It saves it by stirring it in the leaf.
starch