Photosythesis

Question 1

Word Equation for photosynthesis

Answer 1

Water+Carbon Dioxide –> Glucose+Oxygen

Question 2

Symbol equation for photosynthesis

Answer 2

6H20+6Co2–>C6H12O6+O2

Question 3

What factors could limit the rate of photosynthesis?

Answer 3

Light intensity 
Availability of water 
Temperature 
Carbon dioxide concentration 
Amount of chlorophyll in the leaves

Question 4

What is a limiting factor?

Answer 4

When a process (e.g. photosynthesis) depends on two or more factors (/substances), the
rate of that process is limited by the factor which is in shortest supply

Question 5

What does a plant use the glucose made in photosynthesis for?

Answer 5

• Used for respiration to release energy
• Converted into insoluble starch for storage until it is needed
• Used to produce fat, or oil for storage
• Used to make other carbohydrates e.g. cellulose which strengthens the cell wall
• Used to produce amino acids for protein synthesis.

Question 6

What type of reaction is photosynthesis?

Answer 6

Photosynthesis is an endothermic reaction. It requires light energy which is trapped by
the chlorophyll in the chloroplasts.

Question 7

Define Photosynthesis

Answer 7

Photosynthesis is the process by which green plants (and some bacteria) make their
food. They use raw substance (carbon dioxide and water) and light energy to combine
these substances to make glucose and oxygen.