(a)[4]
Describe the ways in which carbohydrates and amino acids are used in plants.
(b)[3]
Label the position of the phloem in each of the three enlarged sections in Fig. 2.1. Use a label line and the letter P for each section.
(c(i))[3]
Explain why aphid D ingested the highest concentration of sucrose.
(c(ii))[3]
Describe how modern technology is used to reduce damage to crop plants by insects.
(c(iii))[1]
Give one example of a way insects are useful to farmers.