(a)[3]
Structures A and B can both be seen with a light microscope, but the internal detail of the organelles in Fig. 2.1 is visible only with an electron microscope. Explain why the internal details of structures A and B are visible only when an electron microscope is used and not with a light microscope.
(b)[3]
Give the full names of the structures labelled C, D and E.
(c)[1]
State one role of vacuoles in plant cells.
(d)[4]
Structures F and G differ greatly in their permeability. Explain how the make-up of structures F and G determines their permeability.
(e)[3]
Fig. 2.1 shows two plasmodesmata linking the adjacent cells. Describe the roles of plasmodesmata in transport in plants.