(a(i))[2]
State the names of the leaf layers labelled X and Y in Fig. 9.1. X ........................................................ Y ........................................................
(a(ii))[1]
Suggest a reason why the cells in layer X are transparent.
(b(i))[1]
State the name of the structure shown as Z in Fig. 9.1.
(b(ii))[1]
State the name of the process by which gases move into and out of Z.
(b(iii))[3]
Complete Table 9.1 by adding one tick in each row to show the net movement of gases through Z on a hot, dry, sunny day.
(c(i))[2]
State two substances produced during photosynthesis. 1 ........................................................ 2 ........................................................
(c(ii))[1]
State the name of the green pigment required for photosynthesis.