Companion cells contain many mitochondria to

  1. store sucrose
  2. make lignin
  3. carry out photosynthesis
  4. provide ATP for active loading of sucrose
Answer

D) provide ATP for active loading of sucrose

Loading uses ATP. AS & A Level Biology · Topic 7 Transport in Plants · 7.1 Structure of transport tissues

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