Secondary growth of stems and roots:

🧠 Explanation:

Secondary growth in stems and roots, increasing thickness, is driven by vascular and cork cambia. For biology students, this highlights plant anatomy, making it a key topic for studying plant growth, tissue development, and botanical science. Cambia produce wood and bark, strengthening plants. Understanding this reveals plant adaptation and structural biology. It’s essential for analyzing plant physiology, forestry, and agriculture. Studying secondary growth offers insights into how plants develop resilience, crucial for botany, environmental science, and sustainable agriculture, ensuring a clear understanding of plant growth mechanisms and their ecological and economic importance in ecosystems.