(a)[3]
The tomato plants carry out photosynthesis. Describe what happens during photosynthesis.
(b(i))[3]
Suggest reasons why this gives the farmer an advantage.
(b(ii))[1]
Suggest one disadvantage, apart from cost, of growing plants in this way.
(c(i))[2]
Explain how this graph shows that light intensity is the limiting factor for photosynthesis at light intensity P but not at light intensity Q.
(c(ii))[1]
Name one environmental condition that might be limiting photosynthesis at light intensity Q.