The Casparian strip forces water into the symplast pathway because it contains

  1. lignin in the cortex
  2. suberin, which is waterproof
  3. pectin
  4. cellulose, which is permeable
Answer

B) suberin, which is waterproof

Suberin blocks the apoplast. AS & A Level Biology · Topic 7 Transport in Plants · 7.2 Transport mechanisms

Biology MCQ · More A Level Biology: Transport in plants MCQs · Practise