Q.1
Farmers will use heated greenhouses for faster growth of crops. This increases photosynthesis by increasing the...
  • pH
  • light intensity
  • temperature
  • water
Q.2
Photosynthesis requires which type of energy?
  • Heat
  • Electrical
  • Potential
  • Light
Q.3
Photosynthesis takes place in which part of a plant cell?
  • The nucleus
  • The mitochondria
  • The cell wall
  • The chloroplasts
Q.4
Where does the water needed for photosynthesis usually come from in plants?
  • Soil
  • Rivers
  • The sea
  • The air
Q.5
Plants can convert sugars into protein using which mineral ion obtained from the soil?
  • Sodium
  • Magnesium
  • Phosphate
  • Nitrate
Q.6
Plants can convert the sugars made during photosynthesis into which insoluble stored form of energy?
  • Protein
  • Starch
  • Fructose
  • Cholesterol
Q.7
Which very important gas is given off as a by-product of photosynthesis?
  • Carbon dioxide
  • Hydrogen
  • Ammonia
  • Oxygen
Q.8
If the rate of photosynthesis is reduced, which of the following important processes is also reduced?
  • Respiration
  • Growth
  • Reproduction
  • Excretion
Q.9
Photosynthesis is a process in...
  • plants and animals
  • plants and fungi
  • plants and algae
  • bacteria
Q.10
Various factors can limit the rate of photosynthesis. Which of these variables can limit photosynthesis?
  • Carbon dioxide concentration
  • Oxygen concentration
  • pH
  • Time
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