Ace the Certified Arborist Test 2026 – Branch Out and Leaf Your Mark!

Cellulose is a vital structural polysaccharide that serves as a major component of plant cell walls. It is composed of long chains of glucose molecules linked together, forming a rigid structure that provides strength and support to the plant. This is essential for maintaining the integrity of plant cells, allowing them to withstand various stresses and also helping to determine the overall structural properties of plants.

In contrast, the other options do not accurately characterize cellulose. A describes a type of adhesive, which does not pertain to the structural role of cellulose. C refers to enzymes, which are proteins that catalyze biochemical reactions, and photosynthesis involves various types of enzymes, but not cellulose specifically. D describes nitrogen fertilizer, which is a substance used to enhance plant growth but is unrelated to the composition and function of cellulose in plants. Thus, the description of cellulose as a significant component of plant cell walls is precise and captures its essential role in botany.