(a)[4]
Describe and explain the way different wavelengths of light alter the rate of photosynthesis.
(b(i))[2]
Name two products of the light-dependent stage of photosynthesis that are then used in the light-independent stage.
(b(ii))[3]
Describe how these two products are used in the light-independent stage of photosynthesis.
(c)[2]
The rate of photosynthesis can be influenced by factors other than the wavelength of light. These factors may act as limiting factors. Explain what is meant by the term limiting factor.
(d)[4]
Carbon dioxide concentration in the atmosphere can be a limiting factor in photosynthesis. Describe how carbon dioxide reaches the photosynthetic cells in a leaf.