Answer:
Cellulose
Step-by-step explanation:
Cellulose is not a characteristic of plasma membrane, it is a characteristic of cell wall instead. Chemically, cellulose is a polysaccharide and a polymer of glucose. It serves the function of providing strength to plant stems, leafs, and branches. It is present in only plant cells, some fungi and bacteria not in animal cells. In animal cells it is absent because animals are motile so if they sense any danger then they can move to avoid an injury or harm but since plants are non-motile they can not move from one place to another even if they sense any kind of danger that is why they need additional strength which is provided by cellulose.
Other options are wrong. Plasma membrane is primarily made up of phospholipids and some integral proteins. Plasma membrane facilitates liquid uptake from environment into the cell and this process is known as cell drinking or pinocytosis. It is selectively permeable that means it allows movement of only a few substances while restrict others from entering the cells. In this question since they are asking what are not characteristics of cell membrane so 1st option is correct.