Vascular Plants · Botany

What is the role of the 'Endodermis' in the root vascular system?

  1. Production of lateral roots
  2. Regulating water entry via the Casparian strip
  3. Photosynthesis in specialized submerged aquatic leaves
  4. Storage of pollen grains
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Correct answer: Regulating water entry via the Casparian strip

The endodermis acts as a selective barrier. The Casparian strip within its cell walls forces water to pass through the plasma membrane, allowing the plant to filter solutes before they enter the xylem.

Difficulty: Medium Question 11 of 20

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