Final answer:
Plant cell walls and chicken embryo corneal stroma share structural similarities, both containing a network of fibrous proteins, with cellulose being predominant in plant cell walls, while collagen is the main component in the corneal stroma.
Step-by-step explanation:
The structure of the mature plant cell wall is notably similar to the structure of the corneal stroma of the chicken embryo in several aspects. Both structures are composed of a network of fibrous proteins that provide mechanical strength and shape.
In plant cell walls, the primary fibrous component is cellulose, a polysaccharide made of glucose units that creates a rigid structure which, when you bite into raw vegetables like celery, results in a crunch as the cell walls break. In the corneal stroma, the fibers are composed mainly of collagen, which also provides tensile strength and transparency necessary for the function of the cornea.
Both the plant cell wall and corneal stroma consist of organized layers of these fibrous elements, creating a matrix that supports cellular form and function.