Workers rising within a unit in plant (7)
I believe the answer is:
anemone
'in plant' is the definition.
'anemone' can be an answer for 'plant' (I've seen this before). I'm not sure about the 'in' bit.
'workers rising within a unit' is the wordplay.
'workers' becomes 'men' (man is a kind of worker).
'rising' says the letters should be written in reverse (going up in a down clue).
'within' is an insertion indicator.
'unit' becomes 'one' ('one' can be a synonym of 'unit'**).
'men' backwards is 'nem'.
'a'+'one'='aone'
'nem' placed within 'aone' is 'ANEMONE'.
Can you help me to learn more?
(Other definitions for anemone that I've seen before include "Plant of the buttercup family with brightly coloured flowers" , "bloomer" , "Brightly coloured flower or tube-shaped sea creature" , "Colourful plant of buttercup family" , "Woodland plant, eg the windflower" .)