Bachelor appeared, having acquired some flowers (7)

I believe the answer is:

bloomed

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'acquired some flowers' is the definition.
The definition and answer can be both related to change as well as being past participle verbs.
Perhaps there's an association between them I don't understand?

'bachelor appeared' is the wordplay.
'bachelor' becomes 'B' (abbreviation e.g. BA=Bachelor of Arts).
'appeared' becomes 'loomed' (looming is a kind of appearing).
'b'+'loomed'='BLOOMED'

'having' is the link.

Can you help me to learn more?

(Other definitions for bloomed that I've seen before include "developed" , "Came into flower" .)

I've seen this clue in The Times.

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