What role does lignin play in a plant's adaptation to life on land?

Question

Quizplus · Accepted Answer

Lignin is a complex polymer that adds strength and rigidity to the cell walls of plants. This is especially important for supporting the weight of the plant and maintaining its upright structure, allowing it to grow taller and compete for sunlight.

Answer: A and B 
 In addition to strengthening the cell walls, lignin also makes them less permeable to water, which helps prevent excessive water loss and drying out. Therefore, lignin plays a role in both structural support and water conservation, aiding in a plant's adaptation to life on land.

Answer: C and D 
 Lignin does not play a direct role in anchoring the plant in soil or transporting nutrients, so neither of these options is correct.

What Role Does Lignin Play in a Plant's Adaptation to Life