Bryn and Rhys are on their way to a football game. Bryn is annoyed with the transport system. Alfred hears the word ‘transport’ and begins explaining transport system in plants. Alfred explains the ...

Background Various species of selenium (Se) can be radicularly or foliarly absorbed by plants. However, differences of these species in uptake and transport via the xylem or phloem remain unclear.

Foundation tier papers may include questions in which you have to complete a sentence. Some of these questions include words to choose from in a box. You do not have to use all the words - some of ...