An aquatic plant is used to measure the rate of photosynthesis by

  1. counting bubbles of oxygen per minute
  2. counting stomata
  3. measuring the leaf area
  4. measuring starch
Answer

A) counting bubbles of oxygen per minute

Oxygen bubbles show the rate. O Level Biology · Topic 6 Plant Nutrition · 6.1 Photosynthesis

Biology MCQ · More O Level Biology: Plant Nutrition MCQs · Practise