End-of-chapter questions Which of a-d below is an example of i diffusion, ii osmosis, or iii neither? Explain your answer in each case. 1 a b C d
a. Water moves from a dilute solution in the soil into the cells in a plant's roots.

b.Saliva flows out of the salivary glands into your mouth.

c.A spot of blue ink dropped into a glass of still water quickly colours all the water blue.

d. Carbon dioxide goes into a plant's leaves when it is photosynthesising.​