Question

plant cell wall structure
pectin
cross - linking glycan
cellulose microfibrils
middle lamella
primary cell wall
plasma membrane
figure 1
what is the main material plant cell walls are made from?
amylose
actin
cellulose

Explanation:

To determine the main material of plant cell walls, we refer to biological knowledge: plant cell walls are primarily composed of cellulose. Amylose is a component of starch (energy storage in plants), and actin is a protein involved in cell movement and structure in animal cells (and some plant cell processes but not cell wall structure). The diagram also labels "Cellulose Microfibrils" as a key part of the plant cell wall structure, supporting this.

Answer:

cellulose (the option with "cellulose" text, likely the third option in the list)