Why does a plant wilt on a hot, dry day?

  1. It makes too much starch
  2. It loses water faster than it takes it up
  3. Its stomata are always closed
  4. Phloem stops working
Answer

B) It loses water faster than it takes it up

Water loss exceeds uptake, so cells become flaccid. O Level Biology · Topic 7 Transport in Flowering Plants · 7.2 Transpiration and translocation

Biology MCQ · More O Level Biology: Transport in Flowering Plants MCQs · Practise