Root Anatomy · Botany

What is the main role of the endodermis in root anatomy?

  1. Regulating movement of water and minerals into the vascular cylinder
  2. Producing flowers and fruits
  3. Conducting dissolved sugars through the phloem's sieve tube elements
  4. Protecting the shoot apex from drying
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Correct answer: Regulating movement of water and minerals into the vascular cylinder

The endodermis controls entry of water and dissolved minerals into the stele. Its Casparian strip ensures selective transport into the vascular tissues.

Difficulty: Medium Question 15 of 18

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