(a)[5]
Explain the cause of the difference in the numbers of mitochondria and chloroplasts between the root hair cell and the palisade cell shown in Fig. 3.1 and Fig. 3.2.
(b(i))[2]
Explain why the area labelled A in Fig. 3.3 is a tissue.
(b(ii))[2]
Describe two ways in which the structure labelled B in Fig. 3.3 is adapted to carry out its function.
(b(iii))[1]
Describe one way in which xerophyte leaves are adapted to their environment.
(b(iv))[1]
Describe one way in which the roots of xerophytes are adapted to their environment.