Glycogen. They do so because any type of storage molecule must be insoluble whenever it comes in contact with water. Glycogen is also insoluble therefore it makes glucose easily storable in glycogen.
Animal cells store glucose as a polysaccharide called glycogen. Glycogen serves as a readily available energy source that can be broken down into glucose when the cells need energy.
Plants produce glucose by a process called photosynthesis. Photosynthesis uses water, carbon dioxide, and solar energy to build up glucose, which the plant stores in the form of long chains of starch.
Liver cells store chains of glucose in a molecule called glycogen, while muscle cells store glucose in the form of glycogen as well. Glycogen acts as a reserve of energy that can be broken down into glucose when needed for energy production.
Insulin
The form of glucose used my plants is called starch, which is found in the cell wall of the plant, along with cellulose.
Once the body breaks down glucose it'll turn it into glycogen which stored in the muscles for about 2-3 hrs, however if u don't use it in that period the body will transformed it to triglyceride (body fat) and use later. Once ur body starts demanding energy it will retract glycogen or triglyceride and break it down and turn it into ATP.
starch
Cellulose is not an animal starch. It comes from the cell walls of plant cells.
In order to keep the osmotic pressure in the cell constant, starch and glycogen molecules are a means for a plant or animal cell to store glucose. Cells require sugar or glucose as a source of energy for many different functions.
Main product is glucose. It is stored as glucose
Glycogen
Cells located in the pancreas that produces insulin. Insulin controls the amount of glucose in the blood and, when glucose levels spike, cause certain cells to 'suck up' the access glucose and store it.