Write down the significance of diffusion in plants.

Explanation

`i`. Gaseous exchange of `O_(2)` and `CO_(2)` between the atmosphere and stomata of leaves takes place by the process of diffusion. `O_(2)` is absorbed during respiration and `CO_(2)` is absorbed during photosynthesis.
ii. In transpiration , water vapour from intercellular spaces diffuses into atmosphere through stomata by the process of diffusion.
iii. The transport of ions in mineral salts during passive absorption also takes place by this process.