(a)[2]
Name cell A and pathway B in Fig. 6.1.
(b)[5]
Transpiration in the leaves is chiefly responsible for water movement across the root of R. acris. Explain how transpiration causes the movement of water across the root as shown in Fig. 6.1.
(c)[2]
Explain why water moves more slowly in pathway C than in pathway B.
(d)[2]
Ions are absorbed by root hair cells by active transport and facilitated diffusion. Describe two ways in which facilitated diffusion is different from active transport.