A haploid is half of a parent cell.
A target cell respond to a hormone because it bears receptors
The exoskeleton is made of <span>chitin</span>
Cellulose is a straight chain polysaccharide which is made up of glucose molecules that are joined together by beta 1,4 glycosidic bonds. Cellulose is the principal structural material of plants and plants use it to build strong structures. For instances, the rigid cell wall of plant cells is made up of cellulose.
Thus, the correct option is D.
