JAMB - Biology (2001 - No. 25)
Salts and water are absorbed in the roots and transported to leaves by
diffusion through the xylem tissues
osmosis through the phloem tissues
diffusion through the phloem tissues
osmosis through the xylem tissues
Giải thích
The water and salts are absorbed by the root hair and undergo cell to cell movement by osmosis until they reach the xylem. This water is then transported through the xylem vessels to the leaves and is evaporated by the process of transpiration.