Multiple choice

Which of the follwoing substances protects the plant body against invasion of parasites?

  1. Cutin

  2. Suberin

  3. Sclereids

  4. Lignin

  5. None of these

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Lignin is the correct answer as lignin is a complex polymer which acts as cement and hardens the cell wall. It is present in the walls of cells of sclerenchyma tissue. Such cell walls are called lignified.