A botanist observing the structural integrity of hardwood trees notes that the secondary cell wall provides significant strength. Which chemical substance is primarily responsible for this?
Q1. A botanist observing the structural integrity of hardwood trees notes that the secondary cell wall provides significant strength. Which chemical substance is primarily responsible for this?
Answer: Lignin deposits
Explanation: Lignin provides the primary structural strength in secondary walls. Cellulose is tempting but it is the basic framework, not the specific hardening agent.