Plant Tissues · Botany

The waxy substance 'suberin' is a major component of which plant tissue?

  1. Leaf epidermis
  2. Secondary xylem
  3. Outer cork layer
  4. Collenchyma tissue
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Correct answer: Outer cork layer

Suberin is a waterproof, fatty substance found in the walls of cork cells. It makes the outer bark of woody plants impermeable to water and gases, protecting the inner tissues.

Difficulty: Medium Question 18 of 40

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