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Divided and cut up stem on daffodil, primarily (9)

Ross

I believe the answer is:

polarised

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'divided' is the definition.
Both the answer and definition are past participle verbs.
Perhaps they are linked in a way I don't understand?

'cut up stem on daffodil primarily' is the wordplay.
I cannot really see how this works, but
'stem' could be 'arise' (I've seen this in another clue) and 'arise' is present in the answer.
This explanation may well be incorrect...

'and' is the link.

Can you help me to learn more?

(Other definitions for polarised that I've seen before include "camps that are opposite?" , "in opposing camps" , "Extremely divided" , "like some light" , "Separate" .)

I've seen this clue in The Independent.
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